Thursday, July 30th, 2009
Type of Drug
Bowel Anti-Inflammatory Drugs (5-ASA Type)
Brand Names
Generic Ingredient: Balsalazide Colazal
Generic Ingredient: Mesalamine 0
Asacol Pentasa
Canasa Rowasa Lialda
Generic Ingredient: Olsalazine Dipentum
Prescribed For
Ulcerative colitis; rectal products prescribed for distal ulcerative colitis, proctitis, and proctosigmoiditis.
General Information
Chemical cousins of aspirin, these bowel anti-inflammatory drugs (5-ASA type) are used to treat symptoms of bowel inflammation. No one knows exactly how they work, but they are believed to have a local effect on the bowel. The tablet forms are made to delay drug release until they reach the colon. Little of the drug is absorbed into the blood; 70-90% remains in the colon.
Cautions and Warnings
Do not take bowel anti-inflammatories if you are allergic or sensitive to any of their ingredients or to aspirin. Although people who are sensitive or allergic to sulfasalazine have generally been able to tolerate mesalamine—which is an active agent in sulfasalazinethey should be cautious.
Bowel anti-inflammatories may worsev\ 4zo%Vis or cause cramping sudden abiboYrimall pain, bloody diarrhea, fever, headache, or rash. Stop taking the drug at once and call your doctor if any of these symptoms develop.
Some people taking mesalamine have developed kidney problems. People who have or have had kidney disease should be cautious about using these drugs. All people taking mesalamine should have kidney function tests before and during drug therapy.
Possible Side Effects
Bowel anti-inflammatories are generally well tolerated. Tablets and capsules have the most side effects, suppositories the least.
Tablets
♦ Most common: headache; abdominal pain, cramps, or discomfort; belching; nausea; sore throat; and generalized pain.
♦ Common: constipation, diarrhea, upset stomach, vomiting, muscle weakness, dizziness, fever, runny nose, rash, skin spots, achy joints, back pain, and stiff muscles.
✓ Less common: worsening of colitis, gas, runny nose, chills, sweating, feeling unwell, tiredness, acne, itching, arthritis, chest pain, conjunctivitis (pinkeye), painful menstruation, swelling, and flu-like symptoms.
♦ Rare: sleeplessness, hair loss, leg or joint pain, and urinary burning or infection. Other rare side effects can occur in almost any part of the body. Contact your doctor if you experience any side effect not listed above.
Capsules
♦ Less common: abdominal pain, cramps, or discomfort; diarrhea; nausea; headache; respiratory infection; rash; and skin spots.
♦ Rare: worsening of colitis, constipation, gas, vomiting, dizziness, fever, sleeplessness, belching, upset stomach, sweating, feeling unwell, tiredness, itching, acne, achy joints, leg or joint pain, muscle aches, conjunctivitis (pinkeye), swelling, and hair loss. Other rare side effects can occur in almost any part of the body. Contact your doctor if you experience any side effect not listed above.
Suppositories
✓ Common: headache.
✓ Less commQ(v, abdominal palecramps, or discomfort; diarrhea or frequent stools; worsening of colitis; flatulence or gas; nausea; rectal pain, soreness, or burning; dizziness; dry mouth; fever; sore throat; cold symptoms; acne; rash; skin spots; and swelling.
Possible Side Effects (continued)
Rectal Suspension
♦ Common: abdominal pain, cramps, or discomfort; gas; nausea; headache; and flu-like symptoms.
• Less common: bloating; diarrhea; hemorrhoids; pain on enema insertion; rectal pain, soreness, or burning; dizziness; fever; feeling unwell; tiredness; cold symptoms; sore throat; itching; rash; skin spots; back pain-, leg pain: and joint pain.
♦ Rare: constipation, muscle weakness, sleeplessness, swelling, hair loss, and urinary burning or infection. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
None known.
Food Interactions
Take the tablet and capsule with food.
Usual Dose
Balsalazide
Tablets: 2250 mg 3 times a day for 8 weeks.
Mesalamine
Tablets: 800 mg 3 times a day for 6 weeks.
Once-daily tablets: 2-4 (1.2 mg each) once a day with a meal.
Capsules: 1000 mg 4 times a day for up to 8 weeks.
Suppositories: one 500-mg suppository twice a day for 3-6 weeks. Retain the suppository for 1-3 hours for maximum benefit.
Rectal Suspension: 1 bottle of suspension taken as an enema at bedtime every night for 3-6 weeks. The enema liquid should be retained for about 8 hours.
Olsalazine
k4kft, MO mg a day in 2 divided doses.
Overdosage
Symptoms are likely to include: ringing or buzzing in the ears, fainting or dizziness, headache, lethargy, confusion, drowsiness, sweating, rapid breathing, vomiting, and diarrhea. In case of overdose, call your local poison control center or hospital emergency room. You may be told to induce vomiting with ipecac syrup—available at any pharmacy—before taking the victim to the emergency room. If you seek treatment, ALWAYS bring the prescription bottle or container.
Special Information
The tablets and capsules must be swallowed whole. Call your doctor if they are visible in your stool. When using suppositories, handle them as little as possible to prevent melting.
Call your doctor if you develop chest pain, breathing or urinary difficulties, fever, unusual bleeding or bruising, worsening of colitis, or any bothersome or persistent side effects.
If you forget to administer a dose, do so as soon as you remember. If you take a tablet or capsule and it is within 4 hours of your next dose, skip the dose you forgot and continue with your regular schedule. If you take the suppositories or rectal solution and you do not remember until 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: Bowel anti-inflammatories can pass into the fetal circulation. When your doctor considers these drugs crucial, their potential benefits must be carefully weighed against their risks.
Small amounts of these drugs can pass into breast milk. Nursing mothers who must take these drugs should consider using infant formula.
Seniors: Seniors may use these drugs without special restriction.
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Saturday, June 27th, 2009
lithium succinate Lithium succinate appears to have sonic antifungal and anti-inflammatory properties, and is used as an 8% ointment for seborrhoeic dermatitis. (Ftalith).
lodoxamide A mast cell stabilizer similar to sodium cromoglycate. Used as eye drops (0.1%) in allergic conjunctivitis. (Alomide).
Dose: in acute diarrhoea, 4 mg initially, followed by 2 nig as required, up to a maximum of 16 ing daily. In chronic diarrhoea, 4-8 nig daily, but care is necessary in the elderly to avoid faecal impaction. Loperamide is not suitable for children under 4 years of age, nor in patients with liver disease, as it may cause undesirable sedation. (Iniodium).
loprazolam A benzodiazepine hypnotic used mainly in the short-term treatment of insomnia and nocturnal arousal. Dose: 1-2 nig at bedtime. Side-effects include drowsiness, dizziness, dry mouth and headache. See page 152 and Table 22.
loratadine An antihistamine with the general action of that group of drugs, but with reduced sedative side-effects.
Dose: 10 nig dailv. (Clarityn). See page I 10 and Table 2.
63
lofepramine An antidepressant of the irnipramine group, with similar actions and uses, but reduced sedative and anticholinergic side-effects.
Dose: 140-210 nig daily. (Gamanil). See page 128 and Table 11.
lofexidine A narcotic antagonist. It has a selective blocking action on brain nor-adrenaline, and is used for the rapid relief of opioid withdrawal symptoms associated with central sympathetic activity.
Dose: 200 pg twice a day, slowly increased as required over 7-10 days, before withdrawal over 2-4 days. Care is necessary in cardiac insufficiency and bradycardia. (Britl.olex).
lomotil A preparation of diphenoxylate with atropine, for the rapid control of diarrhoea. Dose: 2 tablets 6-hourly.
lomustine A slow-acting cytotoxic agent used in Hodgkin’s disease and solid tumours.
Dose: 130 ing/ni’body surface at intervals of (> 8 weeks. Side-effects, include anorexia. nausea, liver damage and niyelodeprm ion. Dosage should not be repeated until white cell and platelet counts have returned to an acceptable level. Reduced doses are given
when lomustine forms part of a multi-drug dosage scheme. (CCNU). See page 122 and Table 8.
loperamide A synthetic inhibitor of peristalsis.
lorazepam A short-acting anxiolytic/ hypnotic similar to diazepam, but less likely to cause next-day drowsiness. Dose: 1-4 mgdaily. It is also given in similar oral closes or by slow i.v. injection in doses of 50 pglkg for preoperative sedation and anuiesia. Occasionally used i.v. in status epilepticus in doses of 4 nig, but apnoea and hypotension are side-effects that may require resuscitation. fAtivan). See page 152 and Table 22.
lormetazepam A short-acting benzodiazepine hypnotic. It is useful in the treatment of insomnia in the elderly, but is less suitable for insomnia associated with early awakening.
Dose: 500 fig I nig at night. See page 152 and ‘]’able 22.
losartanV An angiotensin 11 receptor antagonist used in the treatment of hypertension.
Dose: 50ing daily The use of potassium-sparing diuretics should be avoided with losartan. It has the advantage of not causing the persistent dry cough associated with ACE inhibitors. (Cozaar). See page 148 and Table 21.
low molecular weight heparins See heparin.
loxapine Antipsychotic agent with the actions and uses of chlorpromazine. Dose: in acute and chronic psychoses, 25-50 mg daily, slowly increased as required. Maintenance doses range from 20-100111g daily. Side-effects are those of other anti-psychotic agents. but loxapine may cause nausea, vomiting and weight changes. f .oxapac). See page 168 and Table 30.
I Mob
magnesium hydroxide A mild antacid laxative, usually given in aqueous suspension as Cream of Magnesia, although tablet forms are also available. Cream of Magnesia is a useful antidote in mineral acid poisoning.
64
Lugol’s solution An aqueous solution of iodine 5% and potassium iodide 10%. Used in the preoperative treatment of t hyrotoxicosis.
Dose: 0.3-1 ml.
lymecycline A soluble complex of tetracycline and lysine. It has the action and uses and side-effects of tetracycline, but is absorbed more readily.
Dose: 800 mg daily. (Tetralysal).
typressin An analogue of vasopressin used to control the polyuria of pituitary diabetes insipidus.
Dose: 2.5-10 units several times a day by nasal spray. Side-effects include nausea and abdominal pain. I.ypressin has some vasoconstrictor properties, and desmopressin is sometimes prellcrred. (Syntopressin).
lysuride (lisuride) A bromocriptine-like drug for the treatment of parkinsonism. II acts by stimulating any surviving dopamine receptors in the brain.
Dose: 200 pg at night with food,
irk ceased at weekly intervals according to response up to a maximum of 5 mg daily. Side-effects include nausea, dizziness and initial hypotensive reactions which may affect driving ability. (Revanil). See
page 160 and Table 26.
magnesium sulphate Epsom salts. A powerful saline aperient, producing loose stools by preventing the reabsorption of water.
Dose: 5- 15 g before breakfast. Used externally for the treatment of boils and carbuncles as a paste with glycerin. A marked loss of plasma magnesium may occur after severe diarrhoea or drug-induced diuresis, and may require the i.v. infection of magnesium sulphate in doses based on the degree of hypoinagnesacmia. It has also been given i.v. in a dose of 8 mmol in the emergency treatment of severe;U’rhythinias associated with hypokalaemia.
magnesium trisilicate A white insoluble powder, with mild but prolonged antacid effects. It was formerly widely used in the symptomatic treatment of peptic ulcer;
now used chiefly for dyspepsia.
Dose: 0.3-2 g.
malathion An organophosphorus insecticide. Used as a lotion 0.5% for lice and scabies as alternative to lindane or carbaryl.
mannitol A sugar that is not metabolized, and is used mainly as an osmotic diuretic. Dose: (after a test dose of 200 mg/kg) 50-200 g by slow i.v. infusion over 24 hours. Mannitol has also been used by i.v. infusion as a short-term ocular hypotensive agent in the treatment of glaucoma. It is also useful in cerebral oedema, given by rapid i.v. injection in a dose of I g/kg as a 2044, solution.
macrolides A group of antibiotics that differ chemically from the penicillins, yet have a similar pattern of activity. They are active orally and are useful in the treatment of penicillin-sensitive patients. Erythromycin is the most widely used member of the group, with clarithromycin and azithromycin as more recent introductions.
magnesium carbonate A white, insoluble powder with antacid and laxative properties.
Dose: 0J-4 g daily.
maprotiline A sedative antidepressant with a general action similar to that of the tricyclic drugs represented by amitriptyline. Dose: 25-150 mg daily. If given at night as a single dose, the sedative action may reduce the need for other drugs. It has milder anticholinergic side-effects than some related compounds, although skin rash is more common. (I udionlil). See page 128 and Table 11.
mebendazole An anthelmintic effective against most intestinal worms.
Dose: 100 mg once for threadworm, and 100 mg twice daily for 2 days against other infestations. Generally well tolerated, but it should not be given to children under 2 years of age. (Verniox).
I Men
in oedematous states. A potassium supplement may be required. Care is necessary in renal and hepatic deficiency.
(KiYcaron). See page 148 and Table 21.
mebeverine An antispasmodic agent which, unlike the anticholinergic drugs, appears to have a direct action on the intestinal smooth muscle. It is useful in the treatment of gastrointestinal spasm and in the irritable bowel syndrome. Dose: .100 mg daily, before food. As with other antispasmodics, mebeverine should not be used in paralytic ileus. (Colofac).
medroxyprogesterone A synthetic progestogen.
Dose: in endometriosis 30 mg daily for 90 days; in dysfunctional uterine bleeding and secondary amenorrhoea: 2.3-10 mg daily for 5-10 days, starling on l6th-2 Ist day of cycle and repeated for 2-3 cycles. Large doses of 400 mg-1.5 g daily are given in breast, endometrial, prostate and other hormone-dependent cancers, or 250mg– I g weekly by deep i.m. inJection. (Farlutal; proves). Depot-proves is a long-acting product used by i.m. injection is a contraceptive. but only after fit][ counselling.
megestrol An orally active progestogen. It is used in oestrogen-dependent breast cancer, and acts by suppressing the uptake of oestrogens by the cancer cells.
Dose: 160 mg daily. Nausea and fluid retention with weight gain are occasional side-effects. (Megace). See page 122.
meloxicarn A recently introduced non-steroidal anti-inflammatory drug (NSAID) indicated in the short-term treatment of acute osteo-arthritis and the longer-term treatment of rheumatoid conditions. Dose: 7.5-15 mg once daily with food; half doses for the elderly. Suppositories of 15 mg are also available. The side-effects are basically those of the NSAI Ds in general. Meloxicam has a more selective action on cyclo-oxygenase, the enzyme involved in the biosynthesis of prostaglandins, and is less likely to cause gastrointestinal disturbance, but it has no cytoprotective action, and is not suitable for patients with peptic ulcer. (Niobic). See page 165 and Table 29.
65
mefenamic acid A non-steroidal anti-inflammatory analgesic agent used to relieve moderate pain in arthritic and rheumatoid conditions, and other states requiring mild analgesic therapy such as dysmenorrhoea. Dose: 1.5 g daily after food. Side-effects are drowsiness an(] haemolytic anaemia. Diarrhoea is an indication that the drug should be withdrawn. (Ponstan). See page 165 and Table 29.
rnefloquine A drug for the prophylaxis and treatment ofchloroquine-resistant malaria. Dose: lot- short -term prophylaxis 250 mg weekly, starting 1 week before exposure and for 4 weeks after return. Doses for treatment require specialist advice. Side-effects include gastrointestinal disturbances, dizziness and weakness. It is contraindicated in patients with a history of neu ro- psych iatric disturbance, and is not suitable for use in severe renal or hepatic impairment. (Lirium). See halofantrine.
mefruside A diuretic useful in the treatment of hypertension and oedema. Dose: 25-50 mg daily in the morning, according to need and response; 25-100 mg
melphalan An alkylating agent of the mustine type. Used mainly in myelomas, lymphomas and some solid tumours. Dose: 150-300 gg/kg daily for 4-6 days, repeated after 1-2 months. In myeloma it is also given by regional perfusion. The injection solution is highly irritant and contact should be avoided. Side-effects include myelo-depression, nausea, rash and pruritus. (Alkeran). See page 122 and ‘rabic 8.
menadiol A water-soluble form of vitamin K. Dose: 10 ing daily. (Synkavit) Phytorneii,dionc i.% now preferred.
menotrophin Human menopausal gonadotrophin containing follicle-stimulating hormone and luteinizing hormone. It is used in the treatment of anovulatory sterility. The dose depends on individual hormone assays and response. The use of the drug has resulted in multiple births. It is also given to males to stimulate spermatogenesis. (Humegon; Normegon).
menthol Colourless crystals obtained from oil of peppermint. Used as spray or drops for nasopharyngeal inflammation.
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Wednesday, June 24th, 2009
dextromoramide A powerful synthetic analgesic with a shorter and less sedating action than morphine. Of value in severe and intractable pain, and in terminal disease.
Dose: 5 ing or more either orally or by injection, according to need and response. Care is necessary in liver dysfunction and respiratory depression. (Palfitunt).
dextropropoxyphene An orally effective analgesic. Of value in many painful conditions, and in malignant disease its use may delay the need to resort to the opiate analgesics.
Dose: 250 ing or more daily, but doses in excess of 700 mg daily may cause toxic psychoses and convulsions. (Doloxene). See co-proxaniol.
dextrose See glucose.
diazoxide An inhibitor of insulin secretion. Dose: given orally in doses of 5 ing/kg or more daily in severe hypoglycaemia. Also of value in severe hypertensive crisis, in
doses up to 150 mg by rapid i.v. injection. Side-effects arc nausea, tachycardia and oedema. (Eudernine).
diclofenac A non-steroidal anti-inflammatory drug (NSAID) of the naproxen type, pe, and used in rheumatoid, arthritic and similar conditions.
Dose: 75-150 ing daily, after food. Suppositories of 100 nigare useful at night, but may cause local irritation. In acute conditions and in postoperative pain, doses of 75 mg once or twice a day by deep i.m. injection for not more than 2 days. (Diclomax; Voltarol). Like other NSAIDs, diclofenac may cause gastric disturbance and hypersensitivity reactions. See page 165 and Table 29.
diamorphine A derivative of morphine with a more powerful analgesic an(] cough-suppressant action. It is also less liable to cause nausea. Valuable for the relief of severe pain and the suppression of useless cough. Addiction is a constant risk owing to the euphoric effects of the drug.
Dose: 5-10 nig orally or by injection, repeated as required. For severe pain in the terminally ill, addiction is of no consequence, and much larger doses are given according to need: if necessary, by continuous infusion or a syringe-pump device.
diazepam A benzodiazepine of value in anxiety states, insomnia, acute alcoholic withdrawal, and for premedication. It also has a muscle relaxant action, and is valuable when given by injection in status epilepticus and in the control of the spasm of tetanus.
Doses: 5-30 mg daily, 10-20 mg by slow i.v. injection as required, up to a maximum of 3 mg1kg in 24 hours. Absorption after Lin. injection is unreliable. It is sometimes given as suppositories of 5-10 ing. Side-effects are drowsiness, dizziness, respiratory depression and hypersensitivity reactions. Care is IICLL’N nary in glaucoma and renal and hepatic impairment. Fxterided treatment may lead to dependence and addiction, and withdrawal should be slow to avoid the risks of precipitating toxic psychosis, confusion and convulsions. (Stesolid; Valium). See pages 177 & 136, an(] Tables 5 & 15.
dicobalt edetate A specific antidote in acute cyanide poisoning; toxic in other conditions.
Dose: 300 mg by slow i.v. injection, followed by 50 ml of glucose solution 50%, repeated if required. (Kelocyanor). Sec .odium nitrite.
dicyclomine An anticholinergic agent used to reduce gastric hyperacidity and the smooth muscle spasm of gastrointestinal disorders.
Dose: 30-60 mg daily. Side-effects
include dryness of the mouth and blurred vision. (Ivlcrbcnlyl).
didanosine An antiviral agent used in HIV infections not responding to zidovudine. Dose: 400 mg daily before food. Diarrhoea, vomiting and peripheral neuropathy are side-effects. (Videx contains didanosine with antacids). See page 144 and Table 19.
dienoes A synthetic oestrogen used as a 0.025% cream for senile or atrophic vaginitis.
diethylcarbamazine A synthetic drug used in filariasis but long-term treatment is necessary.
Dose: I mg/kg daily initially, slowly increased to 6 mg/kg daily, and continued for 21 days. Low initial doses are necessary to reduce allergic reactions due to proteins released front dead %vornis. Side-effects include headache, nausea, rash and conjunctivitis. (I letrazan). See ivermectin.
diflucortolone A corticosteroid used topically as a 0.13′0 or 0.3% cream or ointment in steroid-responsive dermatoses. Of value in resistant conditions. (Nerisone).
diflunisal An anti-inflammatory and analgesic drug (NSAID), chemically related to aspirin, but with actions and uses similar to napmxen.
Dose: 500 ilig– I g daily. Care is necessary in aspirin-sensitive patients, and in peptic ulcer. (Dolobid). See page 163 and Table 29.
Digibind A highly purified preparation of sheep-derived digoxin-specific antibodies, given by i.v. infusion in digoxin overdose or poisoning. It mobilizes digoxin from cardiac receptor sites and binds it as an inert complex which is excreted into the urine, and symptoms of digoxin toxicity subside within an hour.
Dose: depends oil the amount of digoxin absorbed; 40nigcan neutralize about 600ligofdigoxiii.
I Dim
250-500 jig initially according to need. Nausea and vomiting are often signs of overdose. If the heart rate falls below 60 beats per minute, dosage rcquiresadill.ltmclit. See page 1.11 and Table 18.
digoxin- specific antibody See Digibind.
dihydrocodeine An analgesic derived from codeine, but with a more powerful action. Of value in many painful conditions where mild analgesics are inadequate. Dose: 30 mg orally after food, or 50 ing
by i.m. or deep s.c. injection at intervals of 4-6 hours according to need. Dizziness and constipation are side-effects. MIA 18).
dihydrotachysterol A sterol related to calciterol, but with more rapid calcium-mobilizing properties. It is used mainly in hypocalcaemia and parathyroid tetany, but is sometimes effective in calciferolresistant rickets.
Dose: 200 jig daily, adjusted to need according to plasma calcium levels as a solution in oil. (AT 10).
39
digitalis The dried leaf of the foxglove. It has a powerful strengthening and regulatory action oil the heart, but is now used as digoxin.
digitoxin The most powerful cardiac glycoside of digitalis and of value in heart failure and atrial fibrillation. Absorption is rapid but excretion, which depends on metabolism by the liver, is very slow, and cumulative effects may occur.
Dose: (maintanence) requires careful .iditminent, varying from 50-200 f.ig daily.
digoxin The principal cardiac glycoside obtained from digitalis leaf. It is rapidly absorbed orally, and is widely used in cardiac failure, paroxysmal tachycardia and atrial fibrillation. The diuresis of digoxin therapy is a secondary effect following on the improvement in the renal circulation.
Dose: for rapid digitalization, 1-1.5 mg initially over 24 hours: subsequent maintenance close 62.5-500 pg daily. For slow digitalization, 250-500 pg may be given daily for about a week, with subsequent closes based on the response. Elderly patients and children respond adequately to smaller doses, and tablets of 62.5 pg (Lanoxin-111G) are available for such patients. In emergency, digoxin call be given by slow i.v. injection in closes of
diloxanide A well-tolerated aniciellicide used in chronic intestinal anicielliasis when only cysts are present in the faeces. It is also used in acute infections, 5 days after a course of metronidazole.
Dose: 1.5 g daily for 10 days. (Furamide).
diltiazem A calcium channel blocking agent, used in the prophylaxis and treatment of angina, and useful when beta-blocking agents are unsuitable or ineffective.
Dose: 180-360 nig daily, reduced in renal impairment. It may cause bradycardia, ankle oedema and hypotension. potension. (Adizen; Tildiern). Sonic long-acting products with various brand mantes are used in hypertension. They should not be regarded as interchangeable, as the duration of action may vary. See page 114 and Table 4.
dimenhydrinate An antihistamine used mainly as all antiemetic in nausea, travel sickness and vertigo.
Dose: 100-300 ing daily. It may cause more drowsiness than sonic related drugs. (Dramamine).
dimercaprol (SAL) A specific drug for the treatment of poisoning by arsenic, mercury, gold and other heavy metals.
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