Posts Tagged ‘Syndrome’

Generic Name
Deferasirox (deh-fur-ASS-sih-rox)
Brand Name Exjade
Type of Drug
Iron chelating agent. Prescribed For
Chronic iron overload. General Information
Deferasirox binds with iron in stored in the liver. It can also bind small amounts of zinc and copper but the importance of these effects are not known. Almost 3/4 of every dose is absorbed into the bloodstream. Most of the drug is broken down in the liver and passes out of the body in the feces. Women clear this drug from their bodies 17.5% slower than men, but this has not affected how it is used or the doses given.
Cautions and Warnings
Do not take deferasirox if you are allergic or sensitive to any of its ingredients. Most reactions occur within the first month of treatment.
People with liver disease should have monthly blood tests while taking deferasirox.
Kidney failure has developed in people taking deferasirox with fatal results in some cases. People with or those who are at risk of kidney failure should have routine kidney monitoring while taking this medication. People who are at risk for kidney failure in-ciudes seniors, those with kidney disease, and people taking medicines that affect kidney function. Dose adjustment may be needed.
Deferasirox has been associated with potentially severe reduced white-blood-cell and platelet counts, usually in people with preexisting blood disorders.
Rarely, deferasirox has caused hearing loss and eye problems. You should have a full hearing and eye exam before starting on this drug and once a year thereafter.
Skin rash can occur with this medicine. If it is severe, the drug may have to be temporarily stopped. It may be restarted at a lower dosage.
Possible Side Effects
♦    Most common: fever, headache, abdominal pain, cough, sore throat, nasal irritation, diarrhea, flu symptoms, nausea, and vomiting.
✓    Common: respiratory infections, bronchitis, runny nose, rash, upper abdominal pain, joint pain, back pain, tonsillitis, and ear infection.
✓    Less common: itching.
✓    Rare: stomach pain, swelling in the arms or legs, sleep disorder, skin color changes, dizziness, anxiety, gallstones, fatigue, early cataract and hearing loss, some visual haziness, and other eye disorders. Contact your doctor if you experience anything unusual.
Drug Interactions
•    Do not mix antacids containing aluminum with deferasirox. They can prevent it from being absorbed.
Food Interactions
This drug should be taken at the same time every day on an empAq stomach, 30 minutes before eating.
Ustlak 13bSe
Adult and Child (age 2 and over): 9-13.6 mg per lb. of body weight once a day. Dose adjustments will be made according to your response. See “Special Information” for a specific instructions on how to take these tablets.
Overdosage
Large doses of 2-3 times the prescribed amount taken for several weeks with no adverse effects have occurred. Overdose symptoms include hepatitis (mild fever, muscle or joint aches, nausea, vomiting, appetite loss, slight abdominal pain, diarrhea, and fatigue) and some drug side effects. Take the victim to a hospital emergency room for treatment because the heart may be affected. ALWAYS bring the prescription bottle or container.
Special Information
Call your doctor at once if you develop a severe skin rash.
You must have regular vision and hearing tests while taking deferasirox.
Deferasirox tablets should not be chewed or swallowed whole. They must first be mixed completely in 1/2-1 glass of water, orange juice, or apple juice. The tablet will not dissolve but tablet particles will become suspended in the liquid. Drink the resulting sus-Pension immediately. If there is anything left in the glass after drinking the suspension, add a small amount of liquid, mix it with the remaining tablet particles and drink it.
This drug can cause dizziness. Be cautious while driving, operating machinery, or doing anything that requires intense concentration.
If you forget a dose, take it as soon as you remember. If it is almost time for the next dose, skip the one you forgot and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: There are no studies of ranolazine in pregnant women or of its effect on the developing fetus. Pregnant women should take this drug only if its potential benefits outweigh the risks.
This drug may pass into breast milk. Nursing mothers should consider using infant formula.
Seniors: Seniors may experience more drug side effects than younger adults due to greater chances of reduced kidney, liver, and heart function; other diseases; or drug side effects.

Generic Name
Desmopressin (dez-moe-PRES-in)
Brand Names
DDAVP Minirin
Type of Drug
Pituitary hormone replacement.
Stimate
Prescribed For
Nighttime bed-wetting and diabetes insipidus (central or cranial diabetes); also used to control bleeding in certain forms of hemophilia A and von Willebrand’s disease.
General Information
Desmopressin acetate is a synthetic version of antidiuretic hormone (ADH). When ADH is lacking, the body has difficulty retaining fluid. People lacking ADH experience excessive thirst, increased urination, and dehydration; desmopressin controls these symptoms. When used for nighttime bed-wetting, desmopressin should be used in conjunction with behavioral or other non-drug therapies.
Cautions and Warnings
Do not take desmopressin if you are allergic or sensitive to any of its ingredients.
People, especially children and seniors and people with cystic fibrosis and electrolyte imbalances, should only drink enough fluid to satisfy their thirst while taking desmopressin because of the risk of water intoxication, which can result in seizures that could lead to coma. People with coronary artery disease, heart disease, or high blood pressure should use this drug with caution.
Heart attacks and St&D’KeS after treatment with desmopressin MV~bEbn reported in people at risk for them, but there is no definite link to desmopressin use.
People using desmopressin should have their urine checked regularly by their doctor. Your doctor should also check for nasal swelling, congestion, and scarring.
Drug Interactions
experience in blood pressure, loss of sodium, symptoms include coma, confusion, ng headache, decreased urination, rapid
zures), edema, stomach or abdominal dness or flushing of the skin, passing ain, and stuffy or runny nose. Contact perience any side effect not listed above.
Possible Side Effects
V Rare: slight increase
intoxication (
drowsiness, continuin
gain, and seizures)
nausea, rednes
vulvar pain
doctor if you
•    Desmopressin may increase the effects of other drugs that raise blood pressure. This only happens with large dosages.
•    Chlorpropamide and carbamazepine may increase the effects of desmopressin.
Food Interactions None known.
Usual Dose
Nasal Solution—Nighttime Bed-Wetting
Adult and Child (age 6 and over): 20 mcg (0.2 mL) at bedtime. Child (under age 6): not recommended.
Nasal Solution—Diabetes Insipidus
Adult: 0.1-0.4 mL a day in 1-3 doses.
Child (age 3 months-12 years): 0.05-0.3 mL a day in 1-2 doses.
Tablets—Nighttime Bed-wetting
Adult and Child (age 6 and over): Begin with 0.2 mg at bedtime, adjusting to individual need up to 0.6 mg.
Child (under age 6): not recommended.
Tablets—Diabetes Insipidus
Adult: Begin with 0.05 mg twice a day. Daily dosage should be increased according to individual need, up to 1.2 mg a day divided into 2-3 doses.
Child (age 4 aid over): Begin with 0.05 mg and adjust according to individual need.
Child (under age 4): not recommended.
Overdosage
Symptoms include headache, difficulty breathing, abdominal cramps, nausea, and facial flushing. Call your doctor or a hospi-tal emergency room if you suspect an overdose. Because there is no known antidote to desmopressin, your dosage may be temporarily reduced until overdose symptoms subside. If you seek treatment, ALWAYS bring the prescription bottle or container.
Special Information
Call your doctor if you develop headache, breathing difficulties, heartburn, nausea, abdominal or stomach cramps, or vulvar pain.
The Stimate Nasal Solution spray pump and Minirin spray must be primed before its first use. To prime the pump, press down 4 times. Stimate delivers 25 doses per bottle. Throw away the bottle after 25 doses have been used, because anything remaining after the 25th dose is likely to deliver less drug than is needed.
If you forget a dose of desmopressin, take it as soon as you remember. If you don’t remember until your next dose, skip the forgotten dose and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: The safety of using desmopressin during pregnancy is not known, though it has been used to treat diabetes insipidus in pregnant women without apparent harm to the fetus. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
Desmopressin may pass into breast milk. Nursing mothers who must use this drug should use infant formula.
Seniors: Seniors should avoid drinking too much fluid while taking desmopressin.

Generic Name
Diazepam (dye-AZ-uh-pam) rVg_l
Brand Names
Diastat    Valium
Diazepam Intensol    Valrelease
The information in this profile also applies to the following drugs:
Lorazepam &
Ativan    Lorazepam Intensol
Oxazepam M
Type of Drug  Benzodiazepine sedative.
Prescribed For
Anxiety, tension, fatigue, agitation (particularly due to alcohol withdrawal), muscle spasm, and seizures; also prescribed for irritable bowel syndrome and panic attacks.
General Information
Diazepam and other benzodiazepines directly affect the brain. They can relax you and make you more tranquil or sleepy, or they can slow nervous system transmissions in such a way as to act as an anticonvulsant.
Cautions and Warnings
Do not take diazepam if you know you are allergic or sensitive to any of its ingredients or to another benzodiazepine drug, including clonazepam.
Diazepam can aggravate narrow-angle glaucoma, but you may take it if you have open-angle glaucoma and are receiving therapy for it.
Other conditions in which diazepam should be avoided are severe depression, severe lung disease, steep apnea (intermittent cessation of breathing during sleep), liver disease, drunkenness, and kidney disease. In all of these conditions, the depressive effects of diazepam may be enhanced or could be detrimental to your overall condition.
Diazepam should not be taken by psychotic patients. It is not effective for them and can trigger unusual excitement, stimulation, and rage.
Diazepam is not intended for more \han 3-4 months of continuous use. Your comikkni) should be reassessed before continuing YOU( MS-16cation beyond that time.
Diazepam may be addictive. It should be used with caution in people with a history of drug dependence.
Drug withdrawal may develop if you stop taking it after only 4 weeks of regular use but is more likely after longer use. It may start with anxiety and progress to tingling in the hands or feet, sensi-tivity to bright light, sleep disturbances, cramps, tremors, muscle tension or twitching, poor concentration, flu-like symptoms, fatigue, appetite loss, sweating, and changes in mental state. Your dosage should always be reduced gradually to prevent drug withdrawal symptoms.
Possible Side Effects
Y Most common: mild drowsiness during the first few days of therapy. Weakness and confusion may occur, especially in seniors and in those who are sickly. If these effects persist, contact your doctor.
♦ Less common: depression, lethargy, disorientation, headache, inactivity, slurred speech, stupor, dizziness, tremors, constipation, dry mouth, nausea, inability to control urination, sexual difficulties, irregular menstrual cycle, changes in heart rhythm, low blood pressure, fluid retention, blurred or double vision, itching, rash, hiccups, nervousness, hysteria, psychosis, inability to fall asleep, and occasional liver dysfunction. If you have any of these symptoms, stop taking the drug and contact your doctor at once.
•    Rare: Rare side effects can affect your heart, stomach and intestines, urinary tract, blood, muscles, and joints. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
•    Diazepam is a central-nervous-system depressant. Avoid alcohol, other sedatives, narcotics, barbiturates, monoamine oxidase inhibitor antidepressants, antihistamines, and antidepressants. Taking diazepam with these drugs may lead to excessive depression, drowsiness, or difficulty breathing.
•    Smoking may reduce diazepam’s effectiveness by increasing the rate at which it is broken down by the body.
•    Effects of diazepam may be prolonged when taken with cimeti(1(m,, Contraceptive drugs, disulfiram, fluoxetine, isoniazid, ketoconazole, rifampin, metoprolol, probenecid, propoxyphene, propranolol, and valproic acid.
•    Theophylline may reduce the sedative effects of diazepam.
•    If you take antacids, separate them from your diazepam dose by at least 1 hour to prevent them from interfering with the passage of diazepam into the bloodstream.
•    Diazepam may increase blood levels of digoxin and the chances for digoxin toxicity.
•    Levodopa + carbidopa’s effects may be decreased if it is taken with diazepam.
Combining diazepam and phenytoin may increase phenytoin blood concentrations and the risk of phenytoin toxicity.
Food Interactions
Diazepam is best taken on an empty stomach, but it may be taken with food if it upsets your stomach.
Usual Dose
Solution or Tablets
Adult’. 2-40 mg a day. Dosage must be adjusted to individual response for maximum effect. In seniors, less of the drug is usually required to control tension and anxiety.
Child (6 months and over): 1-2.5 mg 3 or 4 times a day; more may be needed to control anxiety and tension.
Child (under 6 months): not recommended.
Rectal Gel
Adult and Child (age 12 and over): 0.09 mg per lb. of body weight. Approximate dosage: 5 mg if 31-60 lbs., 10 mg if 61 -110 lbs., 15 mg if 111-165 lbs., or 20 mg if 166-244 lbs.
Child (age 6-11): 0.14 mg per lb. of body weight. Approximate dosage: 5 mg if 22-40 lbs., 10 mg if 41-82 lbs., 15 mg if 83-121 lbs., or 20 mg if 122-163 lbs.
Child (age 2-5): 0.23 mg per lb. of body weight. Approximate dosage: 5 mg if 13-24 lbs., 10 mg if 25-49 lbs., 15 mg if 50-73 lbs., or 20 mg if 74-97 lbs.
An extra 2.5 mg of the rectal gel may be given if a more precise dosage is needed or as a partial replacement for people who do not retain the full dosage after it is first inserted rectally.
Overdosage
SYMPUns of overdose include confusion, sleepiness, poor coordination, lack of response to pain, loss of reflexes, shallow breathing, low blood pressure, and coma. The victim should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.

Generic Name
colchicine (KOLE-chih-sene)
Type of Drug Antigout medication.
Prescribed For
Prevention and treatment of gouty arthritis; also prescribed for Mediterranean fever; chronic progressive multiple sclerosis; cirrhosis of the liver; biliary cirrhosis; Beh~et’s disease’, pseudogout (a condition caused by calcium deposits); amyloidosis; very low blood-platelet count (also known as ITP); skin reactions, including scleroderma, psoriasis, Sweet Syndrome, and other conditions; and nerve disability associated with chronic progressive multiple sclerosis.
General Information
While no one knows exactly how colchicine works, it appears to help people with gout by reducing the inflammatory response to uric acid crystals that form inside joints and by interfering with the body’s mechanism for making uric acid. Unlike drugs that affect uric acid levels, colchicine does not block the progression of gout to chronic gouty arthritis; it will, however, relieve the pain of acute attacks and lessen the frequency and severity of attacks. It has no effect on other kinds of pain.
Cautions and Warnings
Do not use colchicine if you are allergic or sensitive to any of its ingredients or you suffer from any serious blood, kidney, liver, stomach, or cardiac condition.
Vomiting, abdominal pain, diarrhea, nausea, kidney damage, and blood in the urine may occur with colchicine, especially at maximum doses. This can worsen existing gastrointestinal (GI) or other conditions. Stop taking the medication and call your doctor if you develop one of these symptoms.
She weakness that people develop while taking colchicine is frequently related to high levels of colchicine in the blood caused by poor kidney function and improves without treatment 3-4 weeks after the drug is stopped. This reaction is often mistaken for other conditions.
Periodic blood counts should be done if you are taking
colchicine for long periods of time.
Colchicine interferes with the absorption of vitamin B12 by af-
fecting the lining of the GI tract.
Colchicine may affect the process of sperm generation in men. The safety and effectiveness for use by children have not been
established.
Possible Side Effects
V Common: vomiting, diarrhea, and abdominal pain may occur if you take maximum doses of colchicine for an acute gout attack. You may also experience severe diarrhea, kidney and blood-vessel damage, blood in the urine, and reduced urination.
✓    Less common: hair loss, rash, appetite loss, and muscle and nerve weakness.
✓    Rare: with long-term colchicine therapy—reduced whiteblood-cell and platelet counts, nerve inflammation, blood-clotting problems, rash, unusual bleeding or bruising, tingling in the hands or feet, red or purple spots under the skin, and other reactions. Colchicine may interfere with sperm formation. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
•    Colchicine interferes with the absorption of vitamin B12.
•    Colchicine may increase sensitivity to central-nervoussystem depressants, such as sedatives and alcohol.
•    The following drugs may reduce colchicine’s effectiveness: anticancer drugs, bumetanide, diazoxide, thiazide diuretics, ethacrynic acid, furosemide, mecamylamine, pyrazinamide, and triamterene.
•    Taking phenylbutazone with colchicine increases the risk of side effects.
•    Mixing the anitiiofic clarithromycin with colchicine can lead to colchicine toxicity, especially in the elderly and those with kidney disease.
Food Interactions None known.
Usual Dose
Acute Gout Attack: 1-1.2 mg. This dose may be followed by 0.51.2 mg every 1-2 hours until pain is relieved or nausea, vomiting, or diarrhea occurs. The total dose needed to control pain and in-
flammation during an attack varies from 4-8 mg.
Gout Prevention: 0.5-1.8 mg daily. In mild cases, 0.5 mg or 0.6 mg may be taken 3-4 days a week.
Familial Mediterranean Fever: 1-2 mg a day.
Cirrhosis of the Liver: 1 mg a day for 5 days each week. Biliary Cirrhosis: 0.6 mg twice a day.
Amyloidosis: 0.5 mg 1-2 times a day.
Behqet’s Disease: 0.5-1.5 mg a day.
Pseudogout: 0.6 mg twice a day.
ITP: 1.2-1.8 mg a day for 2 weeks or more.
Scleroderma: 1 mg a day.
Sweet Syndrome: 0.5 mg 1-3 times a day.
Other Skin Disorders: up to 1.8 mg a day, depending on the specific condition.
Overdosage
The lethal dose is estimated at 65 mg, although people have died after taking as little as 7 mg at once. Usually 1-3 days pass between the time that an overdose is taken and symptoms begin. Overdose symptoms start with nausea, vomiting, stomach pain, diarrhea—which may be severe and bloody—and burning sensations in the throat or stomach or on the skin. If you think you are experiencing overdose symptoms, contact your doctor immediately, or go to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Call your doctor if you develop rash, sore throat, fever, unusual bleeding or bruising, tiredness, weakness, numbness, or tingling. Seniors are move 4,ialy to develop drug side effects and should use this drug with caution.
Stop taking maximum doses of colchicine as soon as gout pain is relieved and reduce your dose to a maintenance level if your doctor has prescribed it for gout prevention. Stop taking the drug entirely and contact your doctor at the first sign of nausea, vomiting, stomach pain, or diarrhea.
If you forget a dose of colchicine, take it as soon as possible. If it is almost time for your next dose, skip the dose you forgot and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: colchicine can harm the fetus. Pregnant women should not take it unless the potential benefits clearly outweigh the risks.
It is not known if colchicine passes into breast milk. No problems with nursing infants are known, but nursing mothers who must take colchicine should consider using infant formula.
Seniors: Seniors, especially those with renal, hepatic, gastrointestinal, or heart disease, are more likely to develop side effects and should use colchicine with caution.

Type of Drug
Contraceptives
Plan B
Prescribed For
Prevention of pregnancy, endometriosis, excessive menstruation, and cyclic withdrawal bleeding. Ortho Tri-Cyclen and Estrostep may be prescribed for moderate acne in women over age 15.
General Information
Contraceptive drugs are synthetic hormones containing either progestin or a progestin-estrogen combination. The overall effects of any contraceptive are influenced by the interaction of all active ingredients, including those Huth -&))Otogenic and anti-estrogenic aqtk%(kkj.’%tte drugs are similar to natural female hormones, which cannot be used as contraceptives because very large dosages would be required. Synthetic hormones are more potent and are effective at smaller dosages. Contraceptive drugs work by preventing sperm from reaching the unfertilized egg, preventing the implantation of a fertilized egg in the uterus, or preventing ovula-tion (the release of an unfertilized egg from the ovaries). They prevent acne by balancing hormone levels.
When properly used, hormonal contraceptives can be 97-99% effective at preventing pregnancy. These products vary in their etfectiveness, and in the amount and type of estrogen or progestin used. The side effects of these drugs tend to increase with the amount of hormone they contain. While low hormone dosages are preferred, contraceptives with the smallest amounts of estrogen may be less effective in some women than others.
Single-phase products provide constant levels of estrogen and progestin throughout the entire month-long pill cycle. In 2-phase combinations, the amount of estrogen remains at a steady low level throughout the cycle, while progestin levels increase and then decrease. This variation in progestin allows normal changes to take place in the uterus. Three-phase products are meant to simulate the normal hormone cycle and reduce breakthrough bleeding. Throughout the cycle, estrogen levels remain the same while those of progestin change to create a 3-part wave pattern. The amount of estrogen in 3-phase products is considered low. Breakthrough bleeding may occur with the older combination products from day 8 through 16 of the cycle.
The mini-pill, a progestin-only product, may cause irregular menstrual cycles and may be less effective than estrogenprogestin combinations. Mini-pills may be recommended to older women or women who should avoid estrogens (see “Cautions and Warnings”).
The contraceptive patch releases small amounts of progestin and estrogen continuously over 3 weeks. The medication is absorbed into the blood vessels just below the skin. The patch works in the same way as contraceptive pills do.
The vaginal ring releases small amounts of etonogestrel, a progestin, and estradiol, an estrogen, in the vaginal canal over 3 weeks. The combination prevents pregnancy in the same way as combination pills do but may be less effective than contraceptive pills because some people find them harder to use.
Most contraceptive drugs are designed to simulate a normal Mt%VwM cycle. By not taking the hormones 1 week out of the month, you continue to have your regular period. In fact, these products are often used to stabilize a woman’s period. Two products, Seasonale and Seasonique, come in an 84-pill packet and are taken once a day for 3 months. This means you will only have your period once every 3 months. Another, Lybrel. is designed to be taken every day, eliminating monthly menstruation. Drosperinone, the progestin found in Yasmin and Yaz, has been found to relieve Premenstrual Syndrome (PMS) symptoms in addition to acting as an effective contraceptive hormone.
Levonorgestrel, a progestin, is used in implants that provide effective contraception for up to 5 years after surgical implantation under the skin of the upper arm or inside the uterus. Levonorgestrel implants should be replaced at least once every 5 years. Etonorgestrel implants are effective for 3 years. Implants can be removed at any time, reversing the contraceptive effect. The progestin intrauterine inserts provide effective contraception for about 1 year. The implant and intrauterine systems contain the same hormone found in the mini-pill and are associated with many of the same side effects and precautions as oral contraceptives.
Emergency contraceptives (sometimes referred to as the “morning-after pill”) contain high doses of estrogen and progestin. They are intended for use only after contraceptive failure or unprotected intercourse. They should never be taken by a pregnant woman.
Contraceptive drugs in any form are associated with risks. These risks are greatest in women over age 35 who smoke and have high blood pressure.
Cautions and Warnings
Do not take contraceptives if you are allergic or sensitive to them or any of their ingredients.
The risk of breast cancer may be slightly higher among current and recent users of combination oral contraceptives. This risk appears to decline after contraceptive use is stopped and is gone by 10 years after stopping combination contraceptive products. Breast cancers found in contraceptive users tend to be less advanced than those in non-contraceptive users.
You should not use contraceptive drugs if you are or might be pregnant, have had blood clots in veins or arteries, stroke, any blood-coagulation disorder, known or suspected cancer 0 the breast, sex organs, or liver. Products With more estrogen, or those t43.t jmmdr3higher sustained blood levels of estrogen, such as the contraceptive patch, are more likely to be associated with an increased risk of life-threatening blood clots.
Contraceptive drugs may cause eye lesions. Call your doctor at once if you develop visual difficulties of any kind.
Women taking the combination products Seasonale and Seasonique will have their period only once every 3 months and those taking Lybrel will not have a regular monthly period. It is absolutely essential for you to verify you are not pregnant if you think you may be pregnant for any reason.
The risks of contraceptive drugs increase if you are physically immobile or have asthma; cardiac insufficiency; epilepsy; migraine; kidney problems; a strong family history of breast cancer; benign breast disease; diabetes; endometriosis; gallbladder disease or gallstones; liver problems, including jaundice; high blood cholesterol; high blood pressure; estrogen or progestin intolerance; depression; tuberculosis; or varicose veins.
There is an increased risk of heart attack in women who have used contraceptive drugs for more than 5 years, or who are between age 40 and 49 and have other coronary risk factors such as smoking. obesity, high blood pressure, diabetes, and high blood cholesterol. This risk remains even after the medication is stopped.
Smokers in their mid-30s or older who use contraceptive drugs are 5 times more likely to have a heart attack than nonsmokers taking contraceptives and 10-12 times more likely to have a heart attack than nonsmokers who do not use the pill. Death due to circulatory disease also increases substantially in smokers taking contraceptive drugs, especially in women at least 35 years old. The risk of stroke is also increased in this group. Heavy smokers (more than 15 cigarettes a day) should not use hormonal contraceptives.
Women with a history of headaches, high blood pressure, or varicose veins should avoid estrogen-containing products, as Should older women and those who have experienced estrogen side effects.
Contraceptive drugs may mask the onset of menopause. Progestin-only products are associated with an increased risk of blood-clotting problems.
The progestin in Yasmin and Yaz raises blood potassium levels. Women with kidney, liver,,Dy adrenal gland disease should use eittlp_C pIrjdUcj with caution.
Intrauterine inserts have been associated with an increased risk of pelvic inflammatory disease (PID). The highest risk usually occurs within the first 20 days after insertion. Do not use intrauterine inserts if you have had an ectopic pregnancy.
Toxic Shock Syndrome has been associated with tampons, some barrier contraceptives, and the vaginal ring, although there is no proof that the product was the cause of the infection.
Possible Side Effects
♦ Common: Common side effects often result from using a product that is poorly suited to your body chemistry. Determining the right amount and type of hormone often minimizes these effects. If you are taking too much estrogen, you may experience nausea, bloating, high blood pressure, migraine, excess cervical mucous, skin discoloration, colon polyps, water retention, and swelling, or breast fullness or tenderness. Too little estrogen may cause early or mid-cycle breakthrough bleeding, spotting, or reduced periodic flow. Too much progestin is associated with weight gain and increased appetite, tiredness or fatigue, low periodic flow, acne, depression, breast regression, and androgen-related side effects (acne, oily scalp, hair loss, or excess hair growth). Too little progestin may cause late breakthrough bleeding, excessive periodic bleeding, or missed periods.
✓    Less common: abdominal cramps, infertility after discontinuance of the drug, breast tenderness, weight change, headache, rash, vaginal itching and burning, general vaginal infection, nervousness, dizziness, depression, cataracts, changes in sex drive, hair loss, and increased sensitivity to the sun.
✓    Rare: Women who use contraceptive drugs are more likely to develop several serious conditions, including blood clots in the deep veins, stroke, heart attack, liver cancer, gallbladder disease, and high blood pressure. Women who smoke cigarettes are at much higher risk for some of these adverse effects. Contact your doctor if you experience any side effect not listed above.
brug Interactions
•    Ampicillin, barbiturates, bexarotene, bosentan, carbamazepine, chloramphenicol, efavirenz, fluconazole, griseofulvin, ketoconazole, neomycin, nelfinavir, nitrofuratoin, oxcarbazepine, phenylbutazone, phenytoin, penicillin drugs, protease inhibitor drugs for HIV, rifampin, rifapentine, statin drugs (atorvastatin and rosuvastatin), St. John’s wort, sulfa drugs, tetracycline products, and sedatives can make all contraceptive drugs less effective. Use backup birth control while taking these medications together.
•    Contraceptive drugs may elevate blood levels of benzodiazepine sedatives and sleeping pills (midazolam, lorazepam, oxazepam, and temazepam), caffeine, cyclosporine, imatinib, metoprolol, corticosteroids, theophylline drugs, tizanidine, triptan-type migraine drugs, and tricyclic antidepressants, increasing the risk of side effects. Discuss mixing these medicines with your doctor. Dosage reductions may be needed.
•    Contraceptive drugs may increase the toxic liver effects of acetaminophen and reduce the drug’s effectiveness. Contraceptive drugs may increase or decrease the effect of anticoagulant (blood-thinning) drugs. Discuss the risks of this combination with your doctor.
•    Mycophenolate interferes with only those contraceptives that contain levonorgestrel (Alesse, Aviane, Lessina. Levora, Levlite, Lutera, Lybrel, Mirena, Nordette, Norplant II, Portia, Plan B, Seasonale, Seasonique, and Triphasil). Backup contraception is recommended.
•    Exenatide may reduce the effectiveness of contraceptive pills.
Take them at least 1 hour before an injection of exenatide.
•    Contraceptive drugs may reduce the effectiveness of clofibrate for elevated blood triglycerides, sulfonylurea drugs for diabetes, ursodiol for gallbladder disease, and pain relievers, including salicylates (aspirin).
•    Contraceptive drugs may increase blood-cholesterol levels and interfere with blood tests for thyroid function and blood sugar.
•    Acetaminophen may increase blood levels of ethinyl estradiol, a common contraceptive drug ingredient, increasing side effects and reducing contraceptive effectiveness.
•    Since Yasmin and Yaz raise blood potassium levels, nether should be used if you ate taking spironolactone or anD)ftr potassium-sparing diuretic, potassium supplements, angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor antagonists, aldosterone antagonists, heparin, non-steroidal anti-inflammatory drugs (NSAIDs), or other medications on a long-term basis that may further increase potassium levels.
•    Contraceptive drugs may interfere with the effects of insulin
for diabetes.
•    Acitretin interferes with the contraceptive effect of progestin-
only mini-pills. It is not known if it also interferes with combination contraceptive drugs.
Food Interactions
None known. Usual Dose
Single-Phase, 2-Phase, and 3-Phase Combinations: The first day of bleeding is day 1 of the menstrual cycle. Beginning on the first day of the cycle, take 1 pill a day for 20-21 days according to the number of pills supplied by the manufacturer. If menstrual flow has not begun 7 days after taking the last pill, begin the next month’s cycle of pills. Some manufacturers recommend starting the pills on a Sunday to make it easy to remember to take them. In this case, start taking your pills on the first Sunday after your period begins. If menstruation begins on a Sunday, take the first pill that day.
Seasonale: Take 1 pink tablet every day for 84 consecutive days. Do not skip a day. Then, take 1 white pill a day for 7 days. Then, start a new pill cycle. You may be pregnant if you do not have a period while you are taking the white pills.
Seasonique: Take 1 light blue-green tablet containng levonorgestrel and ethinyl estradiol daily for 84 consecutive days, followed by 7 days of ethinyl estradiol tablets. Do not stop if spotting or breakthrough bleeding occurs. Report prolonged bleeding to your doctor.
Progestin-Only Mini-Pill: Take 1 pill every day.
Contraceptive Patch: Apply a new patch to the thigh, abdomen, or arm. Remove the patch after 3 weeks and then reapply a new patch after 1 week. Be sure to always apply a new patch on the same day of the week. If you are switching from birth control pmts, apply the first patch on the same day you would start a new cycle of pills.
Vaginal Ring: Keep the vaginal ring in the vaginal canal for 3 weeks. Remove it and put a new one in 1 week later. If you did not use a hormonal contraceptive in the previous month, insert the ring between day 1 and day 5 of your cycle.
If you are switching from a combination birth control pill, insert the ring anytime during the week after you took your last pill but before you would have started your next cycle of pills. No additional contraception is necessary.
If you are switching from a mini-pill, insert the ring on the day after you take your last mini-pill.
If you are switching from a progestin implant or an IUD, insert the ring on the same day your implant or IUD is removed.
If you are switching from a progestin injection, insert the ring on the same day you would have received your next injection.
If you are switching from a progestin-only mini-pill, implant, injection, or IUD, use another form of contraception for the first 7 days after you insert the ring.
Emergency Contraception: Emergency contraceptive kits have only a few pills. They should be taken with a full meal. Take half the pills (1 or 2 depending on the brand you use) within 72 hours of unprotected sex, however they are most effective when taken within the first 24 hours. Take the rest of the pills 12 hours after the first dose. Emergency contraceptives reduce the risk of pregnancy by 75%.
The pregnancy test in the kit can be used to determine if you became pregnant earlier in your cycle or during a previous cycle. If the test is positive, consult your doctor before taking emergency contraception. If you vomit within one hour of taking either dose, contact your doctor.
Overdosage
An overdose may cause nausea and withdrawal bleeding in adult women. Overdose victims should be taken to a hospital emergency room. ALWAYS bring the prescription package.
Special Information
Use backup birth control to prevent pregnancy in the first 3 weeks after you begin taking contraceptive drugs.
Contraceptive drugs do not protect against sexually transmitted diseases.
VM your pill at the same time each day to establish a routine and ensure maximum contraceptive protection.
Call your doctor immediately if you experience severe abdominal pain; severe or sudden headache; pain in the chest, groin, or leg, especially the calf; sudden slurring of speech; changes in vision; weakness, numbness, or pain in the arms or legs; coughing up of blood; loss of coordination; or shortness of breath. These symptoms may require emergency treatment.
Other problems that may require medical attention are bulging eyes; changes in vaginal bleeding; fainting; frequent or painful urination; a gradual increase in blood pressure; breast lumps or secretions; depression; yellowing of the skin or whites of the eyes; rash; redness or irritation; upper abdominal swelling, pain, or tenderness; an unusual or dark-colored mole; thick, white vaginal discharge; or vaginal itching or tenderness.
See your doctor for a check-up every 6-12 months.
Some manufacturers include 7 inert or iron pills in their packaging to be taken on days when the drug is not taken. This makes it easier for women to stay on schedule with their pills. The 7 pills bridge the gap between contraceptive cycles and allow women to take 1 pill every day without stopping.
For single- or 2-phase combinations: If you forget to take a pill for 1 day, take 2 pills the following day. If you miss 2 consecutive days, take 2 pills for the next 2 days. Then return to your schedule of 1 pill a day. If you miss 3 consecutive days, do not take any pills for the next 7 days and use another form of contraception; then start a brand new cycle.
Seasonale: The risk of pregnancy increases with each pink tablet you forget. Use another method of non-hormonal backup contraception any time you miss 2 or more pink tablets until you have taken a pink tablet every day for 7 consecutive days. You are protected against pregnancy if you miss 1 or more white tablets, as long as you begin taking the pink tablets again on the proper day.
Seasonique: The risk of ovulation and pregnancy increases with each forgotten light blue-green pill. If you miss 1 light blue-green pill, take it as soon as you remember and take the next pill at your regular time. This may mean you will take 2 pills on the same day. You don’t need to use a backup birth control method if you forget only 1 pill. If you forget 2 light blue-green pills in a row, take 2 pills on the day you remember and take 2 pills the ReYA day. -Then go back to taking 1 pill a day MMI you finish your pack. If you miss 2 01 MbreYight blue-green pills in a row, you must use non-hormonal backup contraception until you have taken a light blue-green pill daily for 7 days in a row. If you miss 1 or more yellow tablets, you are still protected against pregnancy provided you begin taking light blue-green pills again on the proper day.
For 3-phase combinations: If you forget to take a pill for 1 day, take 2 pills the following day. If you miss 2 consecutive days, take 2 pills for the next 2 days. Then return to your schedule of 1 pill a day. If you forget to take a pill for 3 days in a row, stop taking the drug and use an alternate means of contraception until your period starts. ALWAYS use a backup contraceptive method for the remainder of your cycle if you forget even 1 pill of a 3-phase combination.
If you forget to apply the contraceptive patch on the same day of the week once every 4 weeks, you risk a loss of effectiveness on the days after you should have applied it. If the patch comes off or is partially detached in mid-cycle, you must start a new 3-week cycle at once by removing the old patch and applying a new one.
If the vaginal ring is accidentally expelled during the 3 weeks it is normally retained, rinse it off with water and replace it within 3 hours. Do not use hot water. If the ring is not reusable, insert a new ring and continue with your regular schedule. If you do not replace the ring within 3 hours, its effectiveness may be reduced. If you are in week 3 of the cycle, throw the ring away; you may insert a new one immediately, which will begin a new 3-week cycle and cause you to skip a period. Or, you may wait a week, during which time you will have periodic bleeding, and insert a new ring no later than 7 days after the vaginal ring was expelled. This option should be chosen if you had used the ring for 7 days in a row before it was expelled.
If, when it is expelled, you are in week 1 or 2 of your cycle and the ring is out for more than 3 hours, reinsert it and use an additional form of contraceptive until the ring has been worn for 7 consecutive days. A vaginal ring may break and then slip out or cause discomfort. Throw the ring away if this happens.
Missing a pill reduces your protection. If you keep forgetting to take your pills, you must use another birth control method.
If you take drugs that reduce the effectiveness of contraceptive drugs (see “Drug Interactions”), use a backup contraceptive method during that cycle to PMNeiA accidental pregnancy.
GOOD tlL:Inlal hygiene is essential while taking contraceptive drugs. See your dentist regularly and brush and floss carefully because contraceptive drugs may increase the risk of an oral infection.
Contraceptive drugs may increase your sensitivity to the sun.
Wearing contact lenses may be uncomfortable while taking contraceptive drugs because the pills can cause minor changes in the shape of your eyes.
All contraceptive prescriptions come with a “patient package insert.” Read it thoroughly as it gives detailed information about the drug and is required by federal law.
Special Populations
PregnancylBreast-feeding., Contraceptive hormones cause birth defects and may interfere with fetal development. They are not safe for use during pregnancy. If you think you are pregnant, use another form of contraception and stop taking your birth control pills.
Contraceptive hormones pass into breast milk. Combination contraceptive products reduce the amount of milk produced. Nursing mothers who must use any of these drugs should use infant formula.
Seniors: These products are not intended for women who have completed menopause.

Generic Name
Buspirone (bue-SPYE-rove) OG
Brand Name  BuSpar
Type of Drug
Minor sedative and antianxiety drug.
Prescribed For
Anxiety and generalized anxiety disorders; also prescribed for the aches, pains, fatigue, and cramps of premenstrual syndrome (pMS).
General Information
Buspirone hydrochloride has a potent antianxiety effect. It is approved by the Food and Drug Administration (FDA) for short-term relief of anxiety, but it may apparently be used safely for more than 4 weeks. The exact way in which buspirone works is not known, but it seems to lack the addiction dangers associated with other antianxiety drugs, including benzodiazepines. It neither severely depresses the nervous system nor acts as an anticonvulsant or muscle relaxant, as other antianxiety drugs do. Minor improvement will be apparent after only 7-10 days of drug treatment, but the maximum effect does not occur for 3 or 4 weeks.
Cautions and Warnings
Do not take buspirone if you are allergic or sensitive to any of its ingredients.
Buspirone should be used cautiously by people with timer or kidney disease.
Buspirone does not have any antipsychotic effect and should not be taken for symptoms of psychosis.
Although buspirone has not shown a potential for drug abuse, you should be aware of this possibility.
Buspirone should not be used with monamine oxidase inhibitor (MAGI) antidepressants.
Possible Side Effects
♦    Most common: dizziness, drowsiness, nausea, and head-
ache.
•    Common: fatigue, nervousness, lightheadedness, excite-
ment, dry mouth, and insomnia.
•    Less common: heart palpitations, muscle aches and pains, tremors, rash, sweating, clamminess, rapid heartbeat, dif-
ficulty concentrating, anger or hostility, depression, loss of interest, diarrhea, constipation, vomiting, and blurred vision.
♦    Rare: Rare side effects can occur in almost any part of the
body. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
•    Combining buspirone with an MAGI antidepressant may produce severe hypertension and may be dangerous.
•    The effects of combining buspirone with other drugs that work in the central nervous system (CNS) are not known. Do not take other sedatives or antianxiety or psychoactive drugs with buspirone unless prescribed by a doctor familiar with your complete medical history.
•    Erythromycin, itraconazole, ketoconazole, clarithromycin, diltiazem, verapamil, fluvoxamine, and ritonavir may increase blood levels of buspirone. When used in combination, your buspirone dosage may need to be adjusted.
•    Buspirone may increase the side effects of haloperidol and diazepam.
•    Studies show that buspirone is not affected by alcohol, but this combination should still be used with caution because buspirone causes drowsiness and dizziness.
•    The combination of buspirone and trazodone may cause liver inflammation.
•    Combining rifampin with buspirone may decrease buspirone’s effectj\18″eSS.
Food Interactions
This drug may be taken either with or without food, but for the most consistent results, always take your dose at the same time of day in the same way—that is, with or without food. Avoid drinking large amounts of grapefruit juice with this drug.
Usual Dose
Adult: starting dosage-7.5 mg twice a day. Dosage may be increased gradually to 60 mg a day.
Overdosage
Symptoms of overdose are nausea, vomiting, dizziness, drowsiness, pinpointed pupils, and upset stomach. The overdose victim should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Buspirone may cause CNS depression, drowsiness, and dizziness. Be careful while driving or operating hazardous equipment. Avoid other CNS drugs and alcoholic beverages because they will enhance buspirone’s effects.
Contact your doctor if you become restless, develop uncontrolled or repeated movements of the head, face, or neck, or have any intolerable side effects.
If you forget a dose, take it as soon as you remember. If it is almost time for your next dose, skip the dose you forgot and go back to your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Though buspirone has not been found to cause birth defects, be sure to inform your doctor if you are or might be pregnant while taking this drug. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
It is not known how much buspirone passes into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Several hundred seniors participated in drug evaluation studies without any unusual problems. However, the effect of this drug in seniors is not well known, and special problems may surface, particularly in those with kidney or liver disease.

cytarabine A cytotoxic agent that prevents cell development by inhibiting the formation of nucleic acid. It is used mainly in the control of acute mycloblastic leukaemia.
Dose: 0.5-3 mg/kg daily by i.v. or s.c. injection. Close haematological control is essential as the drug is a powerful myclodepressant. Other side-effects are those of the cytotoxic drugs, generally, but fever, myalgia and bone pain may also occur. Alexan; Cv cos: r).
Dose:    nig/kg, daily for 10 days, repeated after 4 weeks. Side-effects are severe nausea, bone marrow depression and an influenza-like syndrome. The drug should be handled with care, as it is a tissue irritant. (DTIC).
dactinomycin See actinomycin D.
dalteparin A low-molecular weight heparin given by s.c. injection for pre- and postoperative thrombo-embolic prophylaxis. Dose: 2500 units daily for 5 (lays. (Fragmin). See enoxaprin and tinzaparin.
cytotoxic drugs A term applied to drugs that can kill cancer cells. In practice, many factors influence their therapeutic value. They are rarely selective, and therapeutic doses usually have a toxic effect on sonic normal cells. They may attack cancer cells at different stages of development, as actively dividing cells are more susceptible than resting cells. They may not reach the cancer cells in adequate concentration, or resistance to the drug may develop. The dose may also depend to some extent on the patient’s tolerance of the drug, and combined treatment with two or more drugs may have the advantages of increased potency with reduced toxicity. All cytotoxic drugs, with the exception of bleomycin and vincristine, bring about a depression of the bone marrow, which may be severe, and some degree of hair loss, which is usually reversible. Severe nausea and vomiting are also common, and early use of powerful antiemetics is essential. Many cytotoxic agents are tissue irritants, and with i.v. treatment great care must be taken to avoid extravasation, as severe local tissue damage can occur. See alkylating agents and antimetabolites. See page 122.
clacarbazine A cytotoxic drug that appears to depress purine metabolism and the formation of DNA. It is used mainly in malignant melanoma, and in combination with other agents it is of value in other malignant conditions.
clanazol A derivative of ethisterone that inhibits the release of pituitary gonadotrophins. Used in conditions such as endometriosis and gynaecomastia. Dose: 200-800 ing daily, starting during menstruation. Side-effects are nausea, dizziness, rash, flushing and hair loss. Care is necessary in cardiac, renal or hepatic impairment, and in epilepsy and diabetes. (Danol).
danthron A synthetic anthraquinone laxative used mainly for constipation in the aged, and in drug-induced constipation in the terminally ill. Not suitable for routine use by other patients.
Dose: given in doses of 25–25 mg as codanthramer, and acts within 6-12 hours. the urine may be coloured red.
dantrolene A skeletal muscle relaxant that acts on the muscle fibre, and not at the myoneural junction. The action may be linked with an interference with the movement of calcium ions. It is used in the severe and chronic spastic states that occur after stroke, spinal cord injury, and in multiple sclerosis.
Dose: 21 ing daily initially, increased at weekly intervals up to a maximum of 400 mg daily, as the response is slow and May be inadequate. The side-effects of weakness and Gangue are mild, and often transient, but liver function tests during treatment are essential. Dantrolene is also of value in malignant hyperthermia, a rare but serious complication of anaesthesia, and is given in doses of I mg/kg by i.v. injection as soon as the condition is diagnosed,

dapsone A sulphone compound used in the ti,atnient of leprosy.
Dose: 25-400 mg orally twice weekly and continued for some years. Resistance to dapsone may occur, and combined treatment with clofazimitic and rifarnpicin may lie necessary. Dapsone is sometimes given with pyrimetharnine in chlotoquine-resistaut malaria. Side-effects are nausea, rash, neuropathy and myelodepression.
duration of action. Used in the diagnosis and control of diabetes insipidus, and in the treatment of nocturnal eneuresis. Dose: 10-20pg intranasally once or twice
a day; 1-4 pg daily by injection. IMAM.
desoxymethasone A corticosteroid, for local application in acute inflammatory and allergic skin conditions. Used as oily cream 0.25%. (Stiedex).
daunorubicin See doxorubicin.
debrisoquine An adrenergic neurone blocking agent with the actions, uses and side-effects of guanethidine, except that it is less likely to cause diarrhoea. It is used mainly in resistant hypertension, in association with other drugs. (Declinax).
See page 148 and Table 21.
deflazacort A glucocorticoid with the actions and uses of related drugs, and comparable in activity with prednisolone. Dose: initially in acute conditions up to 120 mg daily; maintenance dose 3-18 mg daily. (Calcort). See hydrocortisone, page 55 and Table 36.
demeclocycline An antibiotic with the actions, uses and side-effects of tetracycline, but more likely to cause photo-allergic reactions.
Dose: 600 mg daily. Used occasionally in hyponatraemia due to overactivity of the antidiuretic hormone. (Ledermycin).
desferrioxamine A chelating agent that combines with iron salts to form a soluble non-toxic complex. Of great value in acute ferrous sulphate poisoning in children. Dose: 2 g immediately by i.m. injection, together with gastric lavage (2 g of desferrioxamine/1) followed by a single oral dose of 10 g. It may also be given by continuous i.v. infusion, 15 mg/kg hourly up to a maximum of 80 mg/kg. It may cause hypotension if the infusion is given too rapidly. It is also useful in the treatment of iron-overload caused by repeated blood transfusions, and for aluminium overload in patients On dialysis. (Desferal).
desflurane An inhalation anaesthetic
similar to CuflUrane. (Suprane).
desmopressin A derivative of vasopressin, with increased potency and longer
dexamethasone A potent synthetic corticosteroid, with reduced salt-retaining properties. Useful in all conditions requiring systemic corticosteroid therapy (except Addison’s disease), including inflammatory and allergic disorders, shock, cerebral oedema and adrenal hyperplasia.
Dose: 0.5-2 mg daily up to a MaXiMUM Of’ 15 mg daily; in shock, 5-20 mg by slow i.v. injection or infusion; in cerebral oedema, 10 ing initially by i.v. injection, followed by 4 mg i.m. 6-hourly. Dexamethasone is also given by infra-articular injection for local inflammation of joints in doses of
0.4-4 mg. It is also used as eye drops (0.1%)
in uveitis, but care is necessary with prolonged treatment as with some patients a ’steroid glaucoma’ may be precipitated. (Decadron). See page M and Table 36.
dexamphetamine sulphate A central nervous system stimulant. It is used in the treatment of narcolepsy and, paradoxically, it is sometimes useful in hyperkinesia in children.
Dose: in narcolepsy, 20-60 mg daily; in hyperkinesia 2.5 mg initially, slowly increased up to a maximunl’of 20 mg daily. Side-effects are insomnia, anorexia and agitation. Dependence and tolerance may occur early. (Dexedrine).
dextran A blood-plasma substitute
obtained from sucrose solutions by bacterial action, and used as solutions of varying molecular weight (dextran 40, 70). Dextran 70 is used as a blood volume expander by i.v. injection in some cases of shock; dextran 40 is used mainly to improve postoperative peripheral circulation, reduce blood viscosity, and to prevent thrombo-embolism. Care must be taken to adjust dose to avoid overloading the circulation. Any blood-matching should be carried out before giving dextran. (Gentran; Macrodex; Rheomacroclex).

A-Z Principal Drugs (antidepressants - astemizole)
antidepressants The drugs used in the treatment of depression fall into two main groups, the so-called tricyclic antidepressants and the monoamine oxidase inhibitors (MA01s). (Unrelated drugs include lithium carbonate, used only for the prophylaxis and treatment of manic depressive illness.) The tricyclic group, which also includes sonic other compounds with a similar action, appear to act by blocking the neuronal uptake of central transmitters such as noradrenaline and serotonin. They are more widely used than the MAOIs because they are more generally effective, and interact less extensively with other drugs and certain foods. The tricyclic drugs are widely used in endogenous depression, particularly when sleep disturbances are present, but the onset of action is slow, and improvement may not commence until after 2-4 weeks of treatment. Extended therapy is usually required to avoid the risk of a relapse, and patients should be advised accordingly. Sonic tricyclic antidepressants, such as amitriptyline, have a sedative action of value when anxiety is a complicating factor, whereas a less sedating drug such as imipramine may be useful in patients exhibiting apathy and withdrawal. Some of the side-effects, such as dryness of the mouth, are linked with their anti-
cholinergic activity, but tolerance may develop with continued treatment. They also influence the cardio-vascular system and may cause arrhythmias, tachycardia and hypotension, and may interfere with the action of some antihypertensive drugs, although the response to beta-blocking agents is unaffected. Care is necessary in cardiac disease, and with the elderly initial doses should be low. The use of tricyclic antidepressants in epileptic patients may result in a lowering of the convulsive threshold. See page 128 and Table 11.
antidiabetic agents Diabetes mellitus is a deficiency disease due to a lack of insulin, and is characterized by an excessive level of glucose in the blood and urine. Treatment is either replacement therapy with daily injection of insulin, or orally by hypoglycaemic agents such as chlorpropamide. Such agents act by stimulating insulin secretion and release by the beta-cells of the pancreas, and are ineffective in the absence of such cells. See page 132 and Tables 12 & 13.
anti-D(Rh.) immunoglobulin An ininiurioglobulin that is given to a rhesus-negative mother to prevent her forming anti-bodies against fetal rhesus-positive cells which may pass into the maternal circulation during childbirth or abortion and which, in a later pregnancy, could cause haemolytic disease.
Dose: 504) units Lin. within 60-72 hours of delivery or abortion. Doses of 1250 units are given prophylactically. It is of no value it’given after anti-D antibodies have been formed. The inimunoglobulin has also been given after the transfusion of rhesus-incompatible blood. (Partobulin).
antiemetics Nausea and vomiting may be due to several causes, including stimulation of the chemoreceptor trigger zone in the reticular formation of the brain. Man), antiemetics have some degree of central activity, and in some cases their action may be mediated by blocking the effects of dopamine on the trigger zone. Effective drugs include some antihistamines and sonic phenothiazine-based tranquillizers such as prochlorperazine. The alkaloid hyoscine is widely used in travel sickness. More powerful drugs such as domperidone, metoclopramide, nabilone and ondansetron, are of value in the control of the severe nausea and vomiting induced by cytotoxic drugs. The use of antiemetics in early pregnancy requires great care, and is seldom essential.
antiepileptics See anticonvulsants, page 136 and’] able 15.
antihistamines Drugs such as promethazine are of value in conditions associated with the release of histamine from mast cells, such as hayfever, rhinitis, urticaria, pruritus, insect bites and stings. They are also useful in drug allergies. Some antihistamines also have antienietic properties, and are useful in travel sickness. Although all antihistamines have the same basic action, the degree and duration of response and the severity of side-effects may vary. Some antihistamines pass easily into the central nervous system arid are more likely to cause drowsiness. Others may have reduced anticholinergic properties, and cause less dryness of the mouth and blurring of vision. Care is necessary in epilepsy, glaucoma, hepatic disease or prostatic enlargement. See page 110 and Table 2.

antihypertensive agents See page 148 and Table 2 1.
anti-inflammatory agents See non-steroidal anti-inflammatory drugs (NSAIDS) and page 165 and Table 29.
antimetabolites Cytotoxic drugs that appear to act by combining irreversibly with cell enzymes, and so prevent cell division. Methotrexate and mercaptopurine are examples. See page 122 and Table 8.
dermatology and pruritus as oily calamine lotion. Arachis oil enema is used to soften impacted faeces.
argipressin A synthetic form of vasopressin.
artificial tears Some chronic sore eye con clitions may occur in rheumatoid arthritis, and may be due to tear deficiency. Solutions of itypromellose or polyvinylalcohol, sometimes referred to as’artificial tears’, are useful as a bland lubricant to replace the tear deficiency. (Isopto; Hypotears).
antimuscarinic agents See anticholinergic agent” page 160 and Table 26.
antineoplastic agents Anti-cancer drugs. See page 122 and ‘rabic 8.
antipsychotic agents See pages 117 & 1(,8, and Tables 5 & 30.
antitetanus immunoglobulin aulloglobulin obtained from plasma is used in injured patients who have not previously been immunized, and when tetanus is a definite risk. Dose: 250 units jan. A course of tetanus vaccine should also be commenced,
antitubercular agents See rifampicin, page 170 and I able 31.
antiviral agents See page 144 and Table 19.
anxiolytics See page H 7 and Table 5.
apomorphine A morphine derivative formerly used as a powerful emetic, but now considered to be too toxic. Occasionally used in the hospital treatment of parkinsonism. (Britaject).
apraclorildine A clonidine derivative used as eye drops I 9A, to control intraocular
pressure during ophthalmic surgery. Some absorption may occur, so care is necessary in severe cardiovascular disease. (lopidine).
aprotinin An inhibitor of the proteolytic enzyme plasmin, obtained from bovine lung tissue. It is used in the severe haemorrhage due to hyperplasminaemia.
Dose: 500 000-1 000 000 units by i.v. infu.ioll. (Trasylol).
arachis oil Groundnut or peanut oil. It has
emollient properties, and is used in
ascorbic acid (vitamin C) Present in many citrus fruits. Deficiency is not uncommon in the elderly receiving inadequate diets. Severe deficiency causes scurvy, once the bane of seafarers.
Dose: for prophylaxis 25-75 mg daily; therapeutic dose 200-500 mg daily. Doses of 4 g daily are given for acidification of the urine. Claims that vitamin C prevents colds are unproven.
asparaginase Crisantaspase. See page 122 and Table 8.
aspirin (acetylsalicylic acid) Widely used as a mild analgesic and anti-inflammatory agent, often in association with other drugs such as paracetamol and codeine. Dose: 1.2-4 g daily, but in acute rheumatoid conditions doses of 4-8 g daily have been given. Long-term treatment with (loses of 75 mg daily are given liar the prophylaxis of cardiovascular disease. Side-effects include gastric irritation with some blood loss, hyperventilation, and bonitos, with the risk of deafness, may occur with high doses. Aspirin may cause rash and bronchospasm in asthmatic and other sensitive patients. As aspirin is now thought to be associated with Reye’s syndrome, the drug should not be given to children under 12 years of age unless specifically indicated. Aspirin may increase the effects of certain hypoglycaemic and anticoagulant drugs.
astemizole An antihistamine with an extended action and reduced sedative effects.
Dose: Wring once daily before food, and must not be exceeded. Higher doses may cause cardiotoxic side-effects such as ventricular tachycardia. Arrhythmias may follow combined treatment with many other drugs. (Hismanol; Pollen-ese). See page 110 and Table 2.

Re-balancing the Gut Flora
The gut flora are a large collection of bacteria and yeasts living, usually without harmful effects, in our intestines. Some of these microbes are acquired by a baby during birth - several of the most useful kinds live in the vagina too, and the baby swallows them en route to the outside world. Recent research shows that babies delivered by Caesarean section take much longer to acquire the normal gut flora. However, they catch up eventually because, like other babies, they pick up bacteria in the months immediately after birth, mainly from the mother.
There are hundreds of different kinds (species) of microbe in the gut flora, with the exact mix varying from one person to another. They eat the remains of our meals, and provide certain benefits in return:
•    they make some useful vitamins that we can then absorb
•    they keep disease-causing bacteria at bay simply by being there, taking up all the potential ‘parking spaces’ on the lining of the gut so that alien bacteria can’t find a foothold
•    they may also aid digestion in some way, although this is less certain.
On the downside, the gut flora also produce toxins, but we have had aeons of evolution to get used to these, and the liver normally breaks them down quite happily. Only if the liver is badly diseased (as in cirrhosis) do these toxins become a problem.
The immune system is familiar with these fellow-travellers and tolerates them, while ensuring that they do not invade the body any further. However, a loss of immune competence, as in AIDS, can allow them to become invasive and cause disease.
Research into the gut flora is a relatively new field of medicine, and most of the studies have been published in rather obscure medical journals. So the majority of doctors are unaware that abnormalities of the gut flora – the increase of some species at the expense of others – have been found in patients with rheumatoid arthritis, atopic eczema, irritable bowel syndrome and Crohn’s disease. The relationship between these abnormalities and the disease process is unclear at present: it is not necessarily
a cause-and-effect relationship. The implications, as far as treatment is concerned, are far from clear as yet.
The controversial condition known as ‘candidiasis’ appears to be a particular form of gut-flora imbalance, in which yeasts are overly successful. It is called yeast overgrowth in this book (see p. 82).
Among the factors that can cause an imbalance in the gut flora are:
•    prolonged or repeated treatment with antibiotics; also a single high-dose treatment, as may be given before a hysterectomy operation (see p. 76). These seem to kill off the beneficial bacteria in the gut flora, allowing others to flourish.
•    severe diarrhoea, which can deplete the normal community of bacteria. Usually the effect on the gut flora is temporary, but it can sometimes be long-lasting and may lead to food intolerance (see p. 76).
Additional factors that might contribute to a disturbed gut flora are:
•    a diet that is high in sugar and refined carbohydrates; this is thought to give yeasts an unfair advantage over other members of the gut flora, by providing yeasts with their preferred food
•    taking the contraceptive pill; this is very controversial, but some doctors believe there is a link between the widespread use of the contraceptive pill and the number of cases of suspected yeast overgrowth in young women.
Bacterial replacers or probiotics
Bacterial replacers, also known as probiotics, supply live bacteria to replenish the gut flora with favourable species.
Experimental trials suggest that taking bacterial replacers may be a useful treatment for irritable bowel syndrome, for food sensitivity in babies, and for atopic eczema (including prevention – see p. 243). This approach may also be of value in yeast overgrowth, when combined with dietary treatment (see below).
All bacterial replacers have to be taken every day: the bacteria do not seem to establish themselves permanently in the gut flora. And any benefits from taking them vanish within a few days of stopping the treatment – so this is quite an expensive option.
Unless the bacteria in the product are alive – and alive in considerable numbers – the bacterial replacer is of no value. Refrigeration is the key to keeping the bacteria alive since, after three days at room temperature, their numbers start to decline steeply. Bacterial replacers purchased from a health-food shop may have been stored at room temperature for some time and so contain very few live bacteria. Buying by mall, directly from the supplier, is a good plan: ask how long the delivery usually takes.
Many different brands of bacterial replacer are now available. To locate companies selling by mail order, see p. 255.
The no-yeast-no-sugar diet
Although this diet has not been tested scientifically, it is widely used by doctors who are interested in gut-flora disturbances, and often produces strikingly good results with people who had previously intractable health problems. This is not hard scientific data, but the impressive results with certain patients (see p. 82) suggest that the diet is sometimes worth trying. Those with symptoms ascribed to yeast overgrowth or ‘candidiasis’, especially bowel problems and an itchy anus (see p. 82), benefit most frequently.
The best way to do this diet is to start with a relatively low-key approach (Stage 1). Only progress to more stringent dietary measures if you don’t improve adequately. If there is no improvement at all, even on the Stage 4 diet, then you can be reasonably sure that yeast overgrowth is not the cause of your problems.
Stage 1
If you are taking the contraceptive pill, talk to your doctor about changing to another form of contraception. Although the link between yeast overgrowth and the pill is not in any way established, stopping the pill often seems to be beneficial.
Cut out sugar and all sweet foods, including honey, syrup, jam, chutney, pickles, cakes and biscuits, soft drinks and fruit squash. Note that ‘no-added -sugar’ jam should also be excluded – it is very rich in fruit sugars. Also avoid dried fruits, and change
any medicines taken as syrups to tablet form. Do not eat peanut butter, tinned sweetcorn or baked beans, except sugar-free brands. Avoid sweet potatoes, and any vegetables that become sweet when cooked e.g. baked parsnips, caramelised onions. Your ’sweet tooth’ should be your guide – if it tastes sweet, it’s off the menu. Only artificial sweeteners are allowed.
Not eating sugar is thought to deprive the yeast of much of its food supply. Persist with this diet for 4-6 weeks. If you are no better, or only partially better, go on to Stage 2.
Stage 2
In addition to the restrictions of Stage 1, cut all fruit out of your diet, except for pure, unsweetened lemon juice and lime juice. These juices, plus salads and lightly cooked vegetables, should give you enough Vitamin C – or you could take a supplement.
Cut out white bread and anything made with white flour (e.g. pancakes, pastry, noodles and other pasta). Small servings of wholemeal bread, potatoes and unpolished rice (’brown rice’) are allowed. Your staple diet should be vegetables and high-protein foods such as meat, fish and eggs.
Do eat herbs, spinach and fresh garlic, as these may help to curb the growth of yeast. Don’t eat cheese or anything fermented.
Stick with this diet for at least four weeks, and longer if you begin to feel partially better. If you feel a lot better, continue for several weeks, then gradually reintroduce fruits and other excluded foods – but not sugar, honey, jam, syrup or any other very sweet foods.
Stage 3
In addition to all the restrictions of Stages 1 and 2, cut out any foods containing yeast (see p. 190). Why this should work is not entirely understood (see p. 83).
A response to this diet, even a partial response, is a good sign. Consider going on to Stage 4.
Stage 4
Your doctor must agree to you trying this diet, as it may not be safe for everyone.
Avoid all starchy foods including bread, flour, potatoes, rice, pasta, cornmeal, parsnips, beans, lentils etc. Nuts can be eaten in small quantities, but not cashew nuts. This is an extreme diet which gives the yeast almost nothing to live on. No one should stay on this diet for more than a few weeks: it is only used to confirm the diagnosis, or to get the problem under control before tackling it with other treatments.
If there is any improvement with the Stage 4 diet, talk to your doctor about anti-fungal drugs (see p. 83).

Skin-prick tests
This is an indirect method of detecting true allergic reactions. It is one of a family of skin tests that use a similar approach. The three different tests in this family are known as: skin-prick tests or prick tests, puncture tests, and scratch tests.
For the skin-prick test - the technique used in Britain - a small drop of liquid containing an allergen, such as grass pollen, is placed on the arm. The doctor makes a small prick in the skin, under the drop of liquid, allowing a minuscule amount of the allergen to get into the skin. A positive reaction is recorded if a red bump develops soon afterwards. For accuracy, the bump must be compared to positive and negative controls (see below).
The puncture method is very similar to the skin-prick test but uses a slightly different technique for breaking the skin. The term prick-puncture test covers both techniques.
With the scratch method, the skin is scratched lightly, and the allergen solution is then applied over the scratch. This method gives less consistent results than prick-puncture testing.
It is important to include a negative control in the test - a skin-prick test with plain salt water (saline). This should not produce much of a bump - if it does, the skin is clearly over-reactive and the tests more difficult to assess. The doctor should also include a positive control - a skin-prick test with histamine, the substance that plays a central role in allergic reactions. This should always produce a bump. If it does not, the skin is decidedly under-reactive, and the tests are invalid.
Taking antihistamines will make the skin under-reactive, and you should stop taking them before the testing, for a period ranging from a day to several weeks - it varies depending on the particular antihistamine. Ask your doctor for specific instructions about stopping these and other drugs before testing.
Skin tends to be over-reactive to testing in people with dermatographism (see p. 52). Blood tests for specific IgE,
such as RASTs (see p. 92), are needed for anyone who has this condition. Eczema sufferers with a rash over large areas of the body may also require blood tests, if there is too little clear skin for testing.
Skin-prick tests can produce both false positives and false negatives (see box below). Some allergic diseases will give a lot of false negatives and relatively few false positives, while for others the reverse is true. The allergen itself influences the rates of misleading reactions: for example, tests for soya allergy are notoriously unreliable, whereas those for peanut are far more accurate. The age of the person being tested also makes a difference. With all these influences at work, interpreting the test responses is a real art, and the doctor’s experience counts for a lot.
All sorts of people offer skin-prick tests, including alternative practitioners. Get them done by a qualified doctor, preferably by an allergist, who will know how to make sense of the reactions.
Note that the purpose of these tests, and of blood tests for specific IgE, is to identify the allergens that are bringing on your symptoms, not to predict how strongly you will react to those allergens. The tests may give some indication of the intensity of your reaction, but they cannot be regarded as a good guide to how you will respond to the allergen in the future.
The safety record of skin-prick tests is very good. Occasionally a systemic reaction (anaphylaxis) occurs with these tests, but there are no records of any deaths. Nevertheless, if you suffer from severe asthma or have experienced anaphylactic shock in the past, it is advisable for the doctor to have adrenaline and resuscitation equipment available. Those with strong allergic reactions to latex may also react badly if they are tested with an allergen that cross-reacts with latex (e.g. cypress pollen), not just when tested with latex itself. Taking beta-Mockers (see box on p. 150) increases the risk of a life-threatening reaction for anyone in these higher-risk categories.
False positives and false negatives
Apart from challenge tests, none of the tests used for allergy works with 100% accuracy. Most give both false positives and false negatives.
A false positive means that there is a positive test but no actual reaction when the allergen is encountered (e.g. eaten or inhaled). A false negative means that there is a negative test result despite a genuine reaction (as shown by a challenge test, for example).
A test that gives relatively few false positives has good positive predictive value - in other words, if it suggests you are allergic to something, you probably are.
A test that gives relatively few false negatives has good negative predictive value. If it comes up negative, you are probably not allergic to that allergen.
Some tests for allergic reactions show good positive predictive value but poor negative predictive value, while for other tests the reverse is true.
Fresh is best
The fruit and vegetable allergens that provoke Oral Allergy Syndrome (see p. 63) are chemically unstable, so commercially produced extracts for skin-prick testing quickly lose their potency and give false-negative results. Most allergists now favour using a drop of fresh juice from the fruit or vegetable concerned.
Intradermal tests
These tests (also called ‘intracutaneous tests’) put allergen more deeply into the skin than prick-puncture tests. The skin tends to react more when penetrated to this depth, so there are more false positives. There is also a greater risk of a serious reaction which may require emergency resuscitation. Don’t undergo these tests if you are taking beta-Mockers (see box on p. 150).
Blood tests for IgE
There are blood tests that look at the total amount of IgE (the allergy antibody), which is sometimes useful in diagnosis. But more important are blood tests for specific IgE – against egg or grass pollen or latex, for example. There are different ways of measuring the IgE in the blood, the most commonly used being a radio-allergosorbent test or RAST.
Research shows that RASTs are no more accurate than skin-prick tests in confirming real-life allergic reactions. However, they are useful for patients who can’t discontinue their antihistamines without developing severe symptoms, and for those with dermatographism or very severe eczema (see p. 91).
Patch tests
These tests, used primarily for contact dermatitis, are similar to straightforward challenge tests, because the suspect substances are applied directly to the skin.
The test substances are placed on the skin – usually on your back – in small chambers. They are held in place with sticky tape, and left there for several days. Ideally, the reaction of the skin should be checked three times: after two days, again the next day, and again the day after that. It really is worth going back for all these separate visits, because the accuracy of the test increases greatly with repeated checking.
The substances chosen for testing are a standard set of antigens that most commonly cause contact dermatitis. This standard set will pick up 60-80% of all sensitivity reactions in contact dermatitis. If you have substances that you suspect may be causing symptoms, such as cosmetics, the doctor can usually test for these too.
You should not be tested while you still have a rash, as the testing will probably make the existing rash flare up, even though the test patches are applied well away from the rash.
Use of steroid creams and any light treatments (including exposure of the test area to ordinary sunlight) must stop at least a week before testing starts, or the results will not be accurate.
Interpreting patch tests requires a huge amount of skill, plus extensive knowledge of the finicky details of the different test substances. You need a dermatologist with considerable experience in this area.
False positives (see box on p. 91) can occur, especially if you react very strongly to one of the substances tested – some people develop what dermatologists call an ‘angry back’, and this generates false positives to various other substances being tested at the same time. Should you be told that you are sensitive to a great many different things, you may want to query this reading of the test. Ernest N. Charlesworth, an allergist and dermatologist at the University of Texas, describes patients who ‘develop into environmental cripples’ after being told that they are definitely sensitive to multiple antigens, on the basis of misinterpreted false-positive patch tests.
False negatives (see box on p. 91) are also possible, even with very careful testing. Should this occur, a type of challenge test known as a ROAT (Repeat Open Application Test) is possible. The suspect substance is applied to the inner fold of the elbow twice a day for a week. Get your doctor’s agreement before trying this test.
Endoscopy and biopsy
Miniaturised cameras and sophisticated fibre-optics have allowed modern doctors to do something that their predecessors could never have imagined possible – look right inside the human body. This procedure is called endoscopy, and it has a useful role in a few sensitivity reactions.
Looking inside the sinus cavities can assist in understanding exactly what is going wrong in chronic sinusitis. Inspecting the digestive tract can be valuable in several of the non-IgE immune reactions to food, such as coeliac disease (see p. 70) and eosinophilic gastroenteritis (see p. 72).
A biopsy is often carried out at the same time as endoscopy.
s involves taking a small sample from the affected area, such as
I ning of the gut, and studying it in detail under a microscope.
One purpose of a gut biopsy is to look for characteristic :goes of damage to the lining of the gut – such as the distinctive charges produced by untreated coeliac disease. A biopsy can also reveal what kind of immune cells are present. Abnormal numbers of certain immune cells, for example, eosinophils (see p 19), may suggest a particular diagnosis.
Another way of looking at what kind of immune reactions are going on, used for lung diseases, is a bronchoalveolar lavage – iterally a ‘washing out’ of the airways and lungs, allowing immune cells to be collected and studied. This diagnostic technique is lased for Heiner’s Syndrome (see p. 72).
Tests for food intolerance
The only really effective way of testing for food intolerance is an el ruination diet (see pp. 194-7). This is the gold standard. However, it is neither easy nor quick – which has led to a constant search for alternative tests.
The proposed alternatives are all indirect tests, that is to say, non-dietary. The results of the tests are used as a basis for an avoidance diet. In other words, the foods that give a positive test result are avoided.
Some of these tests use samples of hair or blood, others use pulse testing, pendulums, or muscle strength tests (’applied kinesiology’). A few of these tests do show some promise. Pulse tests, and a blood test called the ‘lymphocyte transformation test’. for example, can give a general indication of sensitivity reactions – sometimes. However, even in the most expert hands, these do not give a result that is accurate enough to be useful.
Of the other tests that are available, most have not been evaluated at all objectively.
Many of them are advertised directly to the public, and one of the problems with this approach is that the testing company starts by assuming that food is the problem. The same is usually true of ‘dietary therapists’ and others in the alternative health field offering tests of this kind.
Almost everyone who undertakes such tests is given a fairly long list of foods which have come up positive in the tests. This does not fit with the evidence from medical trials in which a group of people with irritable bowel or migraine (typical food intolerance symptoms) undertake an elimination diet. A significant proportion of them always find that they do not have food intolerance. Of the rest. many find that they react to one or two foods only. The long lists of foods produced by the commercial tests are, to put it mildly, implausible.
With tests that require a sample of blood, sending off two blood samples from the same person, under different names, is a simple way of assessing the tests’ validity. This exercise has been tried several times with different testing companies, and every time two completely different lists of foods have been sent back.
Covert studies of this kind have also shown that the tests overlook genuine reactions. In one alarming case, a woman with a true allergy to peanuts was assured by a ‘dietary therapist’ that she really could eat peanuts safely.
Many people with food intolerance will tell you that they did well after following a diet based on such tests – and they may well have done. Given that common foods such as wheat and milk are regular offenders in food intolerance, and that these foods very frequently feature on the lists of positive test results generated by commercial testing companies, quite a few people should do well. The problem is that these people may also be avoiding many other foods quite unnecessarily.
Furthermore, if people have sensitivities to some other foods that are not on the list, they will be missing out. They could enjoy a far better level of health if all the foods causing symptoms were Identified and removed from their diet.
In the end, an elimination diet is both cheaper and far more likely to give the right answers.
Testing for IgG antibodies
In diagnosing food intolerance, a few doctors offer tests for a type of antibody called IgG. This antibody is formed to any food molecules that get Into the bloodstream after a meal – and some do, even in entirely healthy people. So finding IgG antibodies to food molecules is not indicative of any disease at all. It occurs in everyone and is perfectly normal.
Nevertheless, some doctors feel that by measuring the level of IgG antibodies to foods, they can get a general idea of the permeability of the gut wall (which might possibly be true) and of particular foods that could be causing intolerance reactions (very doubtful – the tests just tell you what you eat most, and you know that already).
This test does measure something real, unlike some of the alternative tests for food intolerance. But the relevance of what it measures to the health of the individual concerned is partial and indefinite. A recent study of IgG testing for irritable bowel syndrome has confirmed this view.
In short, blood tests for IgG antibodies to food molecules seem like very poor value for money, and potentially misleading, whereas an elimination diet is a far more precise way of pinpointing food intolerances.

Steroid inhalers
Most asthmatics nowadays are given a steroid inhaler at some point, as part of their asthma treatment (see p. 160). It will probably be a low-dose inhaler, and the risks of side effects from this are very small. Even at higher doses, inhaled steroids are relatively safe. Many people are unnecessarily afraid of inhaled steroids and refuse to use them until their asthma becomes really incapacitating. It is important not to delay using an inhaled steroid for too long, as this could cause permanent damage to the airways: inflammation eventually thickens the airway wall, leaving it less flexible and therefore less capable of widening.
For side effects of inhaled steroids see p. 145, and for common brand names see p. 147.
Steroid tablets
These are usually a treatment of last resort. But when you need them you need them – and if your asthma has got badly out of control, they can, quite literally, be a life-saver. On the other hand, if there are any other means by which you can tackle your asthma, so that you do not need steroid tablets again in the future –avoiding allergens and irritants, for example, or using other preventer treatments – those means should definitely be taken.
For side effects of steroid tablets see pp. 141-3, and for common brand names see p. 147.
Cromoglycate-type drugs
For asthma, these drugs are taken by inhalation only. They work by blocking the allergic reaction (see p. 148), and are therefore a type of preventer drug.
Cromoglycate-type drugs are usually inhaled four times a day, although your doctor may recommend more frequent inhalations to begin with. Once your asthma is well controlled, you may be able to reduce the dosing regime to three times a day, or possibly twice a day: ask your doctor’s advice about this.
Should you decide to stop taking these drugs at some point, talk to your doctor first. It is generally best to reduce the dose gradually, over a period of 7-10 days. Some asthmatics need to introduce (or reintroduce) steroids at this time, to maintain control of the airway inflammation.
Side effects
When inhaled, cromoglycate-type drugs can produce short-lived irritation in the throat, which may lead to coughing. This sometimes develops into temporary bronchospasm, causing you to wheeze, but this is really only a minor side effect – it does not indicate that the drug is making your asthma worse.
Asthmatics are sometimes advised to use a short-acting
beta-2 reliever (such as Ventolin) before their cromoglycate inhaler, to overcome this problem. However, this would involve using the beta-2 reliever four times a day, which is no longer considered a good idea (see pp. 153-4). Talk to your doctor again if you have been given this advice.
Inhalers that combine sodium cromoglycate with a short-acting beta-2 reliever (e.g. Aerocrom) are not recommended for the same reason.
A better way around the problem of throat irritation may be to switch to an aerosol inhaler, because the irritation is much less than with dry-powder inhalers. Using a spacer along with the aerosol inhaler (see p. 162) will help even more.
Serious side effects of these drugs are very rare (see p. 149). For common brand names, see p. 148.

The days when doctors wanted their patients to obey orders and ask no questions are largely gone. Patients with allergies and other forms of sensitivity - or their parents -

have to play a key role in managing the disease. Most doctors now recognise this, and encourage their patients to learn about their illness, its diagnosis and treatment, and to

be partners in their own medical care.
Quite apart from this, there are aspects of allergy management where few doctors can afford the time to become experts. The nitty-gritty details of dust-mite avoidance or food

labelling practices are good examples. You can usefully supplement your doctor’s treatment here, by informing yourself.
But where should this process stop? That is a difficult question which doctors are increasingly forced to consider. One modern phenomenon, being discussed in many medical

journals at present, is the abundance of medical information on the Internet. Some doctors dread the arrival of patients who have logged on the night before their appointment

and are armed with a huge number of facts about their illness -some accurate, some utterly wrong and some highly debatable. But other doctors welcome the fact that patients are

actively interested in their health problems.
The reactions of doctors to ‘Internet patients’ highlight an issue that also runs right through this
book - that of medical orthodoxy. Who decides what is true and what is false in medicine, and how do they do it? Make no mistake - this is a deep and abiding problem which

afflicts not just scientific medicine, but science in general.
If a doctor, confronted with a web-page claiming that allergies are caused by space aliens intent on
destroying Western civilisation, snorts ‘Rubbish!’, he or she is not, strictly speaking, taking a scientific approach. In science, you should consider all the different

hypotheses.
In theory, science works by questioning everything and taking nothing on trust - but you can’t make much practical progress if you stick rigorously to that approach. Neither

scientists nor doctors start their careers by running experiments to establish the truth of everything they were ever taught. At some point in science, and in scientific

medicine, you have to assume that certain things are probably true, and proceed accordingly. If you make significant progress working on those assumptions, then the chances are

they were correct. But a good scientist always remembers that they are only assumptions.
Scientific medicine rests on a huge number of assumptions. Some of these are clearly accurate - for example, that eating wheat triggers coeliac disease -and it would be

time-wasting to argue about them. But this ‘fact’ about coeliac disease began as just a theory (see p. 70), and a highly debatable one. It has taken time for it to become

substantiated by more and more evidence.
Some medical assumptions become enshrined as facts rather too quickly. Fifty years ago, orthodox medicine accepted as a ‘fact’ that many asthmatic children had ‘intrinsic

asthma’, which was psychological in origin. Research since then has shown that there is almost always an allergy underlying childhood asthma. Many other examples could be given

of medical ‘facts’ that are overturned by subsequent research.
Doctors thirst for certainty, something that is quite understandable when they are faced with so much human need. A significant part of the healing power of medicine comes from

placebo effect (see p. 233), and that relies on patients having faith in the doctor. The traditional way for doctors to cultivate that faith was by assuming an air of absolute

certainty - about their diagnosis of the patient’s illness, about the treatment, and about medicine in general. This need for certainty has always hastened the transformation of

assumptions into facts.
The fatherly authoritarian attitude of old-fashioned doctors was, in large part, a reflection of how little they had in the way of useful treatments, and how much they relied on

placebo effect. Modern doctors have far more genuinely effective remedies to offer and can afford to take a different approach. Many now rely on a different kind of authority,

one based on intelligence, good information, flexibility, curiosity and openness. It’s a form of authority that allows a doctor to say ‘I could be wrong…’ or, ‘Let’s try this

and see what happens…’ without losing face.
Unfortunately, there is another powerful force at work in this complex situation, and that is quackery -the age-old business of selling phoney cures (see p. 209). Official

bodies within the medical community try to curb quackery by weighing the evidence about novel treatments and coming to decisions on their validity. This can be very useful. But

in deciding what is, and what is not, good scientific medicine, medical organizations always run the risk of mistaking their own unverified assumptions for facts.
Establishing criteria for good treatment is essential in medicine, but when this develops into dogmatism, that is decidedly unhealthy. Among the treatments that are being

dismissed as valueless today, there are
several that deserve a fairer hearing.
Some of these treatments have been shown to work by the most excellent of scientific methods. The use of elimination diets in Crohn’s disease is a good example - for some

patients, there is a huge and sustained improvement, suggesting that their disease was caused, at least in part, by food sensitivity. The tactic used by those who want to reject

this evidence is simply to ignore it. When scientific review papers (summaries of all the current knowledge and latest research) are written about Crohn’s disease, the research

on diet is usually not mentioned. Evidence that is routinely ignored in this way slips into oblivion because most doctors only have time to read the review papers, not the

original research reports.
Occasionally - and this is even more shameful -good scientific evidence that goes against the grain of current orthodoxy is actually misreported in review papers. This happened

with an impeccable scientific study showing the benefits of an elimination diet for some patients with rheumatoid arthritis. By missing out certain key facts, a review author

managed to give the impression that the results of this study supported the conventional view on the subject (that diet makes no difference to rheumatoid arthritis), whereas

they actually disputed the conventional view.
Unthinking rejection of new treatments often occurs with currently untreatable diseases such as autism and Chronic Fatigue Syndrome (CFS). Such medical problems always attract

experimental treatments, just as they always attract sheer quackery, and sorting out one from the other is not easy - it takes time, and a clear-headed approach, not knee-jerk

dismissal.

Food Intolerance
The comments of those who have recovered from food intolerance after many years of ill-health are always memorable. ‘It’s like getting my life back again,’ said one woman. ‘I had actually forgotten what it felt like to be well,’ said another, ‘the effect of cutting out certain foods was just amazing.’
For most of those with food intolerance, the disease begins very subtly and gradually – first one symptom (persistent and unexplained diarrhoea, perhaps) then, some years later, another (migraine or headaches) and then, when a few more years have passed, another symptom (such as joint pain or muscle aches). Steadily increasing levels of irritability, `fuzzy-headedness’ or inexplicable tiredness may accompany this decline in health.
Most patients have no idea that all these symptoms are connected until they try an elimination diet, and everything clears up at once, quite dramatically. As one former sufferer described it: `Some of the stuff that got better – well, I’d been like that so long I thought it was just the way I was –grumpy and exhausted, and feeling terrible if I didn’t eat meals on time. It was an absolute revelation to feel completely OK again.’
What does ‘food intolerance’ mean?
In this book, food intolerance means any reaction to food where the immune system has no proven central role.
All the people I have described so far have idiopathic food intolerance, which means, food intolerance with no established mechanism – in other words, doctors can’t say exactly how it is caused. This is a highly controversial area.
The definition of food intolerance used in this book means that it also includes metabolic abnormalities, which do have a well-established cause. These are due to defective enzymes (see upper box on p. 75).
The question of what words mean is a key part of the debate over idiopathic food intolerance. At one extreme, you may come across doctors who call this problem ‘food allergy’, using the original meaning of the word ‘allergy’ (see p. 6). (Some of these doctors use terms such as delayed food allergy and masked food allergy, to point up the distinction from true food allergy, but not all do.) Using the word ‘allergy’ in this context causes a lot of aggravation and confusion, so the term ‘food intolerance’ has, for a long time, been widely accepted as a useful one that avoids unnecessary conflict.
You will also hear the term ‘food intolerance’ used to mean idiopathic food intolerance only – this is probably the most common usage. When the term is used in this way, metabolic abnormalities are being thought of as a separate entity altogether.
A new twist has recently been added to this long-standing wrangle over meanings. When mentioning food intolerance in their literature, some of the major medical organisations (those who dispute the very existence of idiopathic food intolerance) now say simply ‘food intolerance e.g. lactase deficiency’. To anyone familiar with this field, it looks suspiciously like an attempt to redefine ‘food intolerance’ so that it means nothing more than ‘metabolic abnormalities’. The idea seems to be that, if you deny a disease a name, it will go away!
In the medical wilderness
The main text of this article is about idiopathic food intolerance, a disease with a distinctly dubious reputation among doctors. Because it is so controversial, few doctors actually look at the evidence that it exists – which is in fact quite strong (see box on p. 77). Such evidence is simply ignored in most of what is written by the major medical organisations debunking idiopathic food intolerance.
This lack of medical recognition is very unfortunate for patients with idiopathic food intolerance, whose debilitating symptoms could be eliminated, rather than simply being treated (usually to little effect) with drugs.
This prejudiced attitude to idiopathic food intolerance also plays into the hands of those offering bogus diagnostic tests and phoney treatments, often at a very high price. These practitioners
– who have moved in to fill the gap left by conventional medicine
– are a considerable part of the problem, helping to give idiopathic food intolerance a bad name.
The waters are muddied even more by the fact that some people who believe themselves to have food intolerance are actually suffering from psychological problems, which they prefer to attribute to food. Many more have picked up on food intolerance as something rather glamorous to suffer from, inspired by all the media reports about food intolerance among celebrities. All these patients are a good source of revenue for the less scrupulous fringe practitioners and are unlikely, therefore, to be discouraged from their beliefs.
Fortunately there are enough conventional but open-minded doctors, often GPs, who have come to realise, through experience with their own patients, that elimination diets have a remarkable curative effect for some people. The ones who benefit are often the doctor’s ‘old faithfuls’ – those with long-term multiple symptoms, who have been referred to innumerable specialists and treated with all kinds of drugs, but who never get much better. The conventional view of such patients is that they have psychological problems that are being expressed as physical symptoms. This may well be true for some – but others have idiopathic food intolerance.
One of our enzymes is missing
Metabolic abnormalities are a distinct type of food intolerance. Unlike other kinds of food intolerance, metabolic abnormalities have a clearly understood cause: an enzyme that carries out a crucial task in the body’s metabolism is either missing or inept. The problem is generally caused by a defective gene and is therefore inherited.
The most common metabolic abnormality is lactase deficiency leading to lactose intolerance (see p. 79) — this may or may not be inherited. Other metabolic abnormalities include:
trehalase deficiency, lack of the enzyme which breaks down a substance in mushrooms and most other fungi, including yeast. galactosaemia, a defect in the enzyme which processes galactose, one of the sugars found in milk (cow’s or human). This is a serious disease and sufferers must avoid milk scrupulously.
fructose intolerance, which is extremely rare. Those affected have an unpleasant taste in the mouth on eating fruit and other sources of fructose, so avoidance is no particular problem.
phenylketonuria, also very rare. Those affected are usually identified early in life, by a routine blood test.
Is it just placebo effect?
Doctors who doubt the very existence of idiopathic food intolerance will say that people who recover on an elimination diet are just experiencing placebo effect — a psychological response that operates with any treatment, whether effective or ineffective, simply because people believe that the treatment will work. But this is to ignore certain facts:
• Placebo effect produces a fairly small improvement in most people — you have to be very suggestible to feel enormously better. By contrast, when people respond to an elimination diet (the standard method for diagnosing idiopathic food intolerance —see p. 194) they usually have a sudden and dramatic improvement.
• Most of those with idiopathic food intolerance have had it for years and tried all sorts of treatments. They have often experienced some small benefit from these, probably placebo effect. When they try an elimination diet, they have a response that is in a completely different league.
• The idea that all the different symptoms are linked has never occurred to many people who try an elimination diet — they are often trying it for just one symptom, and are staggered when everything clears up. Placebo effect relies on expectation.
• Placebo effect doesn’t last very long — it fades over the ensuing weeks and months. Avoiding the culprit food usually produces a lasting improvement for those with idiopathic food intolerance.
Symptoms
The symptoms of idiopathic food intolerance come on slowly after eating the offending food, and the foods to blame are often those eaten very regularly, such as wheat or milk. Consequently, the symptoms from one meal tend to overlap with those from the previous meal and people with idiopathic food intolerance are more-or-less unwell for most of the time. It Is usually not obvious that food is at fault.
All the symptoms of idiopathic food intolerance are common ones that can be caused in other ways. And no two patients have exactly the same set of symptoms.
(As far as doctors are concerned, neither of these attributes gives the disease a respectable air.)
These are some of the symptoms commonly reported:
• headache or migraine
•diarrhoea, sometimes with bloating and wind; this is often diagnosed as irritable bowel syndrome (IBS)
• in children, stomach aches
• occasionally constipation
• nausea and indigestion
• joint pain
• aching muscles
• a constantly runny or blocked nose (this could be perennial allergic rhinitis linked to food – see p. 68)
• glue ear (see p. 29)
• fatigue and a general feeling of vague ill-health.
Asthma and eczema, triggered by specific foods (see p. 68), can also be part of the picture.
In babies, colic is often caused by food intolerance, including foods the mother is eating which come through into the breast milk in tiny amounts (see p. 202).
Less common symptoms include:
• recurrent mouth ulcers
• stomach or duodenal ulcers
• chronic urticaria (see pp. 50-53)
• swelling (angioedema).
The following diseases have also been linked to idiopathic food intolerance in some patients:
• Crohn’s disease
• palindromic rheumatism (intermittent episodes of joint inflammation)
• rheumatoid arthritis.
Psychological problems such as depression, anxiety, or hyperactivity in children can sometimes be due to food (see p. 80) but it is rare for such psychological effects to occur without any physical symptoms.
Remember that every single one of these symptoms and conditions can be caused in some other way. However, the constellation of migraine/headache, joint pain and diarrhoea is highly characteristic of idiopathic food intolerance.
How might intolerance be caused?
No one knows how idiopathic food intolerance is caused. There are probably many factors involved, with a slightly different mix of factors in each patient. This would help to explain why the symptoms are so extraordinarily varied, with no two sufferers exactly alike.
Although symptoms accumulate over the years, some people can in fact pinpoint the moment when their problems began. ‘I had this terrible bout of diarrhoea from eating too much melon. I lived near a farm and they were free, because of a glut, so I just gorged myself on them. Although I was over the diarrhoea in a couple of days, I was never what you’d call “regular” after that, and the least thing would upset me. Eventually the doctor said it was irritable bowel syndrome. When the other problems began, ages afterwards – headaches and hypoglycaemia and fatigue – it seemed like something quite separate. I never associated them in my mind with the diarrhoea.’
Bad diarrhoea can clear the intestines of their beneficial bacteria, known collectively as the gut flora (see p. 204), and this is probably what initiates food intolerance in such cases. Large doses of antibiotics (as are sometimes given before an operation, e.g. a hysterectomy), or prolonged and repeated courses of antibiotics, given for glue ear or acne, can also disrupt the gut flora and lead to food intolerance. A study of hysterectomy patients has shown that antibiotic treatment before the operation tends to result in irritable bowel syndrome – a common symptom of idiopathic food intolerance – afterwards.
A few interesting observations suggest that minor metabolic abnormalities – a defect in certain detoxification enzymes – may sometimes play a part in idiopathic food intolerance. This is especially likely where there is intolerance to food additives, or where there are behavioural symptoms (such as hyperactivity) or symptoms involving the nervous system (such as migraine).
A third factor that could play a part for some patients are food-derived exorphins. These are fragments of proteins (called peptides) produced by the digestion of food proteins. They happen, probably by pure coincidence, to resemble the substances called endorphins that we all produce for ourselves. Endorphins
are our internal painkillers. They modify nerve impulses in the body and brain, reducing sensations of pain, and improving the sense of well-being. The receptors to which they bind are the same receptors that bind morphine and heroin - it is the intensive stimulation of these receptors that makes these drugs so effective.
Food-derived exorphins may sound like the stuff of science fiction, but they have actually been demonstrated in the digestion products of wheat and milk. They may exist for other foods as well. They are nowhere near as strong as morphine, but do seem to improve mood.
These exorphins may explain the strange observation (made repeatedly, by a great number of initially sceptical doctors) that patients with idiopathic food intolerance often eat huge amounts of their offending food, and ‘can’t live without it’. Often they eat the food several times day, sometimes at every meal. With a ubiquitous ingredient like wheat or milk, this is not particularly difficult - wheat cereal and milk for breakfast, a cheese sandwich at lunchtime, pasta with a creamy sauce for supper, a milky drink and biscuits at bedtime.
Any of these abnormalities is likely to be just one factor in a multi-factorial disease.
Diagnosis
Unfortunately there are no simple accurate tests for idiopathic food intolerance. The kind of tests you may see offered commercially (in advertisements in health magazines for example) are very inaccurate, and a waste of money. Consequently, the only way to diagnose idiopathic food intolerance is through an elimination diet, in which you cut out all the foods you commonly eat, and then -if you get better - test them one by one.
It sounds easy but it isn’t, so make sure you read all the instructions for doing the diet before you start (see pp. 194-7). You should also see your doctor and get his or her approval. Some symptoms - such as severe diarrhoea or headaches -should be investigated by conventional methods first, in case there is some serious underlying cause.
The first step in diagnosis is to decide if a food really is the cause of the symptoms, and the second step is to identify the food or foods concerned.
The first step is crucial. One of the problems with the diagnostic tests that are advertised - such as those using samples of hair or blood - is that they begin with the second step. In other words they assume that food is the problem (see p. 93).
When it comes to the second step, remember that although common foods are often the culprits, almost anything that is eaten can cause idiopathic food intolerance. Every patient with this problem is different in the foods they react to.
Treatment
Avoidance of the food is usually the best treatment for idiopathic food intolerance - however most people do not have to avoid their problem foods for ever. After a while - it could be six months or it could be three years - you can usually go back to eating it again, but in moderation. You must never start eating the food in large amounts again, and it is best not to eat it every day - certainly not at almost every meal, which is the usual pattern for cow’s milk and wheat in the Western diet.
If you find the restrictive diet too difficult, you could try desensitisation treatment (see pp. 210-13). This can work very well.
The patients who should avoid the culprit food indefinitely are those with Crohn’s disease and rheumatoid arthritis: a severe and irreversible relapse can occur otherwise.
The evidence
The evidence for idiopathic food intolerance is more substantial than its opponents would have you believe.
One very well-conducted and interesting study involved children with severe migraine who were investigated by a research team at Great Ormond Street Hospital in London. These are children who are very difficult to treat successfully by normal means. On an elimination diet, 88% of those children got better — an astonishing number. Not just their migraine, but all sorts of other symptoms as well, including aching limbs, runny noses, asthma, eczema, diarrhoea, wind, mouth ulcers and hyperactivity. Some of these children also had epileptic fits, and even this symptom cleared up on the diet, recurring when culprit foods were tested.
A notable feature of this study is that, of the five researchers involved, four were deeply sceptical at the outset. Their report notes that they ‘embarked on this study believing that any favourable response, such as that claimed to substantiate the dietary hypothesis, could be explained as a placebo response. The positive double-blind controlled trial… provides clear evidence that a placebo response was not the explanation.’
Other studies with good scientific credentials have demonstrated a role for idiopathic food intolerance in adults with migraine, and for sufferers from irritable bowel syndrome and Crohn’s disease. There are also good studies of individual patients with rheumatoid arthritis and palindromic rheumatism (an episodic form of inflammatory arthritis) who have responded dramatically to avoidance of a particular food. Some of these patients were given several double-blind challenges and showed changes in certain immunological tests, as well as joint symptoms, when challenged with the offending food. This suggests that the immune system could be playing some part in these food reactions.