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HEADACHES AND MIGRAINES

Wednesday, July 22nd, 2009

HEADACHES AND MIGRAINES
• Take aspirin or acetaminophen for an occasional tension headache
• Don’t overuse headache medication
• Consult a doctor if headaches are frequent or severe
• Experiment with riboflavin or feverfew for natural migraine prevention
• Try acupuncture treatments to reduce migraine frequency
• Treat a migraine as early as possible
• Use Excedrin Migraine for mild migraines ****
• Ask your doctor about a W Aan for more severe
• Discuss topiramate (Topamax) with your MD if you suffer frequent migraines
• Prevent menstrual migraines with NSAIDs
• Prevent sex headaches with NSAIDs
Headaches are extraordinarily common,number seven on the list of reason-, why people see their doctor taking of wellbutrin xl and zoloft . It is estimated that 45 million people suffer from ChTonic’head pain cortico steroids negatively affect male testosterone .That doesn’t begin to include those who have occasional headaches zyprexa quick dissolve . Yet for all that, the exact causes of head pain are not all that clear hydroxyzine pamoate and faq .
According to Joel Saper, MD, director of the Michigan Head Pain and Neurological Institute, the brain itself doesn’t feel pain premarin hair loss . That’s why neurosurgeons can operate on the brain tissue while a patient is wide awake carbatrol kidney . So, a headache isn’t exactly the result of pain in the brain direction flomax taking . We perceive head pain that may originate from the scalp, the skull, or the coverings of the brain buspar wiki . Muscles and nerves in the neck can also create discomfort that is perceived as a headache buying valtrex .
An occasional mild headache does not usually pose a serious problem prilosec and bone loss . But a more severe headache, even if it occurs only once in a while, or a chronic headache, even if it is not extremely painful, deserves medical evaluation terazosin cns distribution . Popping a couple of aspirin or acetaminophen pills just isn’t a good idea when the headache occurs several times a week prevacid gastroesophageal reflux diease . In fact, Dr maxalt and high blood pressure . Saper says that using such over-the-counter (OTC) analgesics too frequently can actually cause the headaches you’re trying to treat who makes cytoxan . It takes an experienced headache doctor to help someone out of such a vicious cycle imuran and pancytopenia .
I have suffered from headaches all my life zovirax solution dosing information . For the past 30 years, I’ve taken from 25 to 35 aspirins daily, in addition to sinus medication creative and lithium batteries . My doctor doesn’t know about these large doses, but regular checkups reveal no damage to my liver or kidneys levothyroxine at night .
The trouble is that many physicians are not aware of how serious this problem can be dissolving penicillin powder . John Edmeads, MD, editorializing in the journal Headache, noted that “the daily use (or, more accurately, abuse) of analgesics actually worsened and perpetuated headaches,” He bemoaned the fact that so few physicians “know that chronic analgesic abuse causes chronic headaches natural viagra alternative review .”328
The diagnostic dilemma for doctors is that they must distinguish between headaches brought on by overuse of pain relievers, headaches caused by some other medical condition, and headaches caused by a change in brain chemistry buy wellbutrin 300 xl . If the headache is a consequence of an underlying condition like the flu, it will go away when the infection runs its course equate gas relief with infant motrin . Celiac disease is one condition that can cause recurrent headaches, among many other symptoms, although the underlying issue is actually a reaction to gluten in the small intestine side effects from ramipril tablets .The treatment is to avoid any foods that contain gluten (wheat, barley, and rye) prednisone and lysodren for do .
I suffered from migraine headaches for more than 10 years topamax side eftects . I saw several neurologists, but my intense headaches forced me to take early retirement viagra chemist nottingham .
In the fall 02002, 1 went from three headaches a week to almost nonstop compare prices nexium . That November, I had only 3 days without headaches fun facts about lithium . I took migraine meds like Frova, Maxalt, and Imitrex, but I mostly lay in bed in a dark room my doctor prescribed .3 premarin .
I was at my wit’s end fsh estradiol fertility . Then illy family doctor suggested a gluten-free diet viagra in india by mail order . Gradually my headaches became less frequent and after several months I was 98 percent headache-free buy famvir . I feel I have been given a new life!
Caffeine Withdrawal Headache
By now, many people recognize that daily use of caffeine can lead to a dependence on it zoloft stuffed animal . Stopping the caffeine—for example, by not drinking coffee on the weekends—can lead to a caffeine withdrawal headache, accompanied by irritability and fatigue plavix and diclofenac sodium contraindications . Probably the best way to deal with this type of headache in the short term is to get a little caffeine buy 200 mg generic lamotrigine . In the longer term, though, a more gradual withdrawal from coffee, soda, or caffeine-containing medications will allow a person to drop the use of the drug without the wicked headache hydrochlorothiazide and libido .
Q lamictal and weekness . 1 am a healthy person and rarely take any medicine loow priced nexium . I quit smoking 14 months ago and am trying to stop drinking coffee lithium polymer battery hyperion . Lately I’ve had trouble with fatigue and on headaches in the afternoon sarafem directons on usage . If I take Extra Strength Excedrin with a Coke on my break, the headache goes away like magic brethine licensing . Regular aspirin doesn’t work as well using hibiclens while on accutane . Why is Excedrin more effective?
A actos sales 2005 . Each Extra Strength Excedrin contains aspirin (250 mg), acetaminophen (250 mg), and 65 mg of caffeine lotrel drug interactions . That means that a standard two-caplet dose will pro-vide you with 130 mg of caffeine what is element lithium used for . Together with your cola, this probably provides as much caffeine as two mugs of coffee dangerous testosterone supplements .
It is conceivable that your afternoon slump and headaches are due to caffeine withdrawal finasteride 2 . People who customarily drink as little as 21/2 cups of coffee can experience symptoms such as lethargy, headache, and anxiety when they stop jaw necrosis actonel .
By taking a pain reliever that contains caffeine, you could be easing your withdrawal college pharmacy sublingual testosterone . An alternate solution is to try to reduce your caffeine intake gradually until you are completely weaned symptoms of prednisone overdose .
Tension Headache
Experts used to pigeonhole headaches into separate categories: tension headache, sinus headache, migraine, and so forth 18 takes viagra . While some categories may be useful, the separations between them have blurred should procardia be taken with food . Trying to tell a tension headache from a migraine is not for amateurs trileptal medication .
Although tension headaches are said to be far more common than migraines, much of the research lately has focused on migraine prevention and treatment oily skin returned accutane . How should you handle recurrent tension headaches, then?
As long as the headache does not occur more often than once a week, there is no problem with using the regular OTC headache pills or powders fsh levels decrease taking clomid .These may contain aspirin, acetaminophen, or a nonsteroidal anti-inflammatory drug (NSAID), usually ibuprofen took motrin while pregnant . All of these have been shown to ease headache pain minoxidil vs propecia . For this type of occasional use, the only reason to prefer one instead of another is based on your own experience of pain relief testimonials of zithromax healing polymyositis . If aspirin doesn’t seem to help but Tylenol does, go with the acetaminophen—and vice versa serum depakote level lab test .
Adding caffeine to the analgesic may help it work better side effects of soma . You can buy a pill that already contains caffeine, or you could take your aspirin, acetaminophen, or ibuprofen with iced tea or a cup of coffee what happens if you snort amitriptyline .
Readers have suggested a few unique approaches that might be worth consideration, though we don’t have any good evidence that they work blurred vision cymbalta . They are, at least, inexpensive and low risk and will not perpetuate headache even if someone gets carried away and uses them too often interpret ir spectra of caffeine .
People have tried applying a dab of peppermint oil to the forehead cheap depakote . Others have put Vicks VapoRub on their temples diovan hair loss . Using Vicks for a headache is strictly an “off label” use, just like so many of the other creative uses people have invented for VapoRub increasing amoxicillin dosage during . It contains menthol as one of its ingredients-, peppermint oil also contains menthol pseudoephedrine overdose symptoms . We’re not aware that menthol has special properties to help ease headaches, but it has been shown to alleviate the pain of sore muscles tadalafil generic . Perhaps it is doing something similar fora tension headache cialis western open .
I have enjoyed your columns about Vicks VapoRub fora variety of uses diflucan prescription without . Here’s one you may not have heard before clindamycin diarreah . A friend had a headache that would not go away testosterone levels in childhood . I told her to rub a dab of Vicks on her forehead prochlorperazine for migraines . She thought I was nuts, but it worked effexor success . She has been using it ever since cialis tadalafil tablets .
Some headache specialists have used relaxation training for people who suffer from chronic or recurrent headaches cymbalta use with bipolar disorder . This can help individuals who are willing to practice the technique, including teenagers who have frequent headaches at school singulair patent expiration .121
One very important point for people who suffer frequent Aspirin
Plain old generic aspirin, 650 milligrams (two tablets), will ease the pain of an occasional tension headache in most cases quitting seroquel . The danger is if the headache becomes more frequent crushed ibuprofen . Aspirin overuse increases the possibility of stomach irritation or ulcers and can also be associated with “rebound headache ibuprofen and miscarriage .” Regularly using aspirin (or acetaminophen) at least 2 days B week may increase the risk that the headache will become chronic because of the medication prozac works grat .
Side effects: Digestive tract upset, including ulcers Downside: People who are allergic to aspirin must avoid it completely itraconazole estrogenic effects .
Cost: Inexpensive, about 5 cents a dose aygestin in uterine bleeding . More if you buy a brand name misoprostol monograph .
headaches of any sort: Overusing pain relievers can actually cause chronic headache d nolvadex . This is a very difficult problem to handle alone, so a person who is using painkillers for a headache more than 2 days a week on a regular basis should get help from a headache specialist wellbutrin for adult adhd add .
Migraine Headache
Experts estimate that 28 million to 30 million Americans suffer from migraines pentoxifylline description .330 Many more migraine sufferers are women than men evista and cervical cancer . As we have pointed out, trying to distinguish between a migraine headache and some other cause of head pain is generally a job for an expert risperdal herb interactions . Usually, though, if the headache is accompanied by exceptional sensitivity to light or noise or by nausea, or if it is preceded by an aura of flashing lights or blind spots, a person should be evaluated for migraine effexor and monopoly . Other tip-offs might be pain on just one side of the head or pain that throbs, especially when you move soma holiday cd greenwheel .
We tend to think of migraines as crushingly painful can lasix hurt you . That’s not always the case response to accutane . But if it is a migraine, there are ways to treat it that should help get the pain under control, whether it is simply annoying or completely incapacitating cheap fluoxetine online order fluoxetine now .
Q tylenol and motrin interaction . 1 am 20 years old and have suffered with severe headaches for as long as I can remember wellbutrin and neurontin . Recently I asked my doctor about them, and he told me as long as / could stop them with an OTC pain medicine / shouldn’t worry about them migraine treatment natural imitrex .
/ am concerned about the frequency of the headaches and the fact that the pain is always on the left side of my head buy cheap generic prilosec . / suffer from at least one a week, usually more keflex suspension flavor . Which pain reliever is best?
A diflucan and nystatin and comparison . Please check in with a headache center alcohol and ampicillin . A one-sided headache could be a symptom of migraine premature ejaculation trazodone . If that is your problem, a prescription migraine medication might be helpful superiority of ofloxacin over ciprofloxacin .
According to Joel Saper, MD, one of the country’s leading experts on headache, using any OTC pain reliever more than 2 days a week might aggravate the problem by causing rebound headaches clomid out of system .
MIGRAINE TRIGGERS
Alcohol (including but not limited to red wine)
Aspartame (found in many “light” sugar-free foods) Caffeine withdrawal
Chocolate
MSG (monosodium glutamate, found in many processed foods, including peanuts)
Nitrates (found in processed meats like hot dogs and salami)
Tyramine (found in aged cheese, chocolate, nuts, sour cream, and yogurt)
0 0 0
If you are diagnosed with migraines, you will want to know what stimuli jump-start them so you can avoid them to the extent possible apri stock pick free high rollers . The migraine-prone brain likes to have a certain amount of routine avalide eps manchester . Disrupted sleep, dehydration, missed meals, secondhand smoke, perfume, and a number of different foods or ingredients are common triggers medication lawsuits norvasc . 33 1 Keeping a headache diary is a good way to figure out what things get your migraine going avodart diflucan . In it, you record details like meals, exercise, sleep schedule, and so forth, as well as your migraines, so you can track back for any patterns discontinue clomiphene citrate .
The validity of some of these suspected triggers has been questioned overdose and children’s motrin . The manufacturer of aspartame has produced data demonstrating that aspartame does not cause headaches doryx prescription . One double-blind study using carob candy as a placebo for chocolate found that women with recurrent migraines were no more likely to develop headaches when given chocolate than when given placebo depakote levels in children . 112 This news was greeted with relief bordering on glee in some circles luvox withdrawl symptoms .
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Q usc estradiol study . My wife loves chocolate, but she read that it can trigger headaches panasonic lithium ion cordless wood combo . Now she won’t eat it, even on special occasions side effects with taking prednisone 10mg . I used to buy her great chocolate for Valentine’s Day and her birthday and she really enjoyed it sniffing risperdal .
I never remember her getting a headache right after eating chocolate, but she does occasionally suffer from migraines effects of caffeine on parkinson’s disease . Can you tell me why chocolate is a problem? -
A uses of sertraline . Chocolate has long been blamed for triggering headaches because it is high in tyramine which is better caduet or altace . This substance is thought to release serotonin and make blood vessels contract and expand clozapine and weight gain . But research shows that most headache sufferers may not be susceptible to chocolate atacand hct tablet .
In a carefully designed study, 63 female headache sufferers were given either carob or chocolate bars (both mint flavored to disguise the obvious difference) penicillin alchohol . There was no significant association of headaches with chocolate bar consumption metformin hdl .
Your wife might perform her own experiment to see if she really is sensitive to chocolate doxazosin 6mg . She may be depriving herself needlessly generic versions of zocor .
0 0 0
Some scientists doubt that cheese, chocolate, and nuts are actually migraine triggers was is nortriptyline used for . Even if they are not migraine triggers for most people, some individuals may react to aspartame, chocolate, cheese, or any of a number of other foods hypertension and drugs and accupril .
Have you ever heard of sipping beer to stop a migraine? I went to a doctor in a little town in Louisiana, and he asked if I get an aura carmen allegra md . Before my head starts to hurt, my vision changes and I see little blinky lights levitra in women .
The doctor said / should drink a can of beer (not wine or liquor) as soon as I start to see the lights exelon web mail . Over the last 20 years, this remedy has worked almost every time bactrim prostate specific . / thought some other migraine sufferers would like to know fenofibrate 10 mg .
The 10 predict what foods will trigger a migraine for one person or be helpful for another caffeine and gluten-free diet . Beer is thought to cause headaches for some people warfarin in bulk . But we heard from one woman that if she drank a beer at the very first sign of trouble, the headache never materialized buying generic viagra . She even traveled with an emergency can for medicinal purpose-, The headache diary we mentioned will help you sort out what foods create problems for you depakote er effects on learning .
I have suffered with migraines all my life, but in the Iasi few years they got worse zanaflex snort . My medicine stopped working and I had headaches
every day buy caffeine free dr pepper .
I was desperate, so when someone suggested I see an allergist
did ibm thinkpad x lithium battery . I discovered I am allergic to a lot of foods I ate every day, includ-
ing coffee, wheat, rice, oats, eggs, and tomatoes dr robert bae in lithium .
Now that I have changed my diet, my head is much better seroquel recreational . Some
recurrent migraines warrant seeing an allergist doxycycline stomach pain .
Natural Remedies
The real action in migraine treatment is with the “triptan” prescription drugs that have been developed over the past decade coming off of cymbalta . There is also an interesting advance in a prescription drug to be taken preventatively by those who suffer chronic migraines zoloft and ginseng . But some herbal remedies and dietary supplements have shown promise in preventing migraines, too simvastatin teva side effects .
RIBOFLAVIN
I’ve had migraines for many years atarax 10 ml . I think I’ve taken every migraine drug on the market and even ended up in the emergency room a few times quinapril 0.5 mg .
I was finally sent to a neurologist who told me to take vitamin B complex (B-100) comprar el viagra gen rico .1 can honestly say I have not had a migraine headache in 2 years vytorin lawsuit north carolina . I couldn’t believe after so much time taking drugs that all I needed to do, was take a vitamin ibuprofen and water retention .
Riboflavin, a B vitamin (B), has been reported to help prevent migraine recurrences the mefloquine antiparasitic . One study found that 400 milligrams of riboflavin per day was able to reduce headache frequency markedly, from 4 days a month to 2 days a month synthroid drip .333 This is a very high dose, however lithium battery aa . Another study compared a product that combined 400 milligrams of riboflavin with 300 milligrams of magnesium and 100 milligrams of feverfew extract to a “placebo” of 25 milligrams 01 Tibofiavin lisinopril bactrim harmful interaction .31The researchers found no difference between the placebo and the combination product dexamethasone acoustic trauma . Nevertheless, the scientists weren’t disappointed because both groups had fewer migraines and less overall discomfort than they had had before starting the study naproxen risks .The investigators hypothesized that 25 milligrams of riboflavin might have been enough to help reduce migraines, which would have explained the lack of difference between the placebo and the tested preparation allegra-d dissolve .
Q valsartan hctz . I’ve read that riboflavin, feverfew, and magnesium can help prevent migraines pravachol effects sex drive . But finding all these things and taking multiple products can be difficult seroquel drug information . All three are contained in an OTC product called MigreLief prednisolone weight gain .
I am a 31-year-old female who has suffered from migraines for many years pharmacy glucophage . Two or three migraines a week really interfered with my life clemastine and betamethasone . I would make plans and then at the last minute I would have to cancel due to another migraine soma sujanani .
This was an ongoing problem what is celebrex for depression . Even after numerous doctor visits and many prescription medicines, I never got relief celexa ocd .
When I decided to try MigreLief as a more natural approach, I had fewer headaches within a month cipro side effecs . In a couple of months my migraines disappeared almost completely eye bleeding coumadin .
A metformin avandia . Thank you for bringing this product to our attention prednisone porstate cancer . The manufacturer, Quantum, points out that MigreLief is intended only for headache prevention and not for immediate pain relief the side effects for lexapro . We have not seen a placebo-controlled trial of this combination product, although there is some research to support the use of each of the ingredients for migraine prevention indian cialis .

A-Z Principal Drugs (suramin - thyroxine)

Saturday, June 27th, 2009

suramin A drug used in the early treatment of trypanosomiasis, but it is of no value in the later stages of the disease as it does not enter the cerebrospinal fluid.
Dose: I g i.v. weekly for 5 weeks, after a tolerance test dose of 200 mg. Side-effects are gastrointestinal disturbances, dermatitis, hyperac%thesia and kidney damage.
suxamethonium A short-acting, depolarizing muscle relaxant, with an action lasting 3-5 minutes. A preliminary injection of thiopentoric should first be given, as the initial effect of suxamethonium is a
painful muscle contraction before the relaxant action supervenes.
Dose: 20- tOO ing i.v. during surgery, with further doses according to need. Suxamethonium may also be given as a 0.1% solution by i.v. infusion. Exceptionally, the muscle relaxant action of the drug may be prolonged with marked apnoea. Unlike non-depolarizing muscle relaxants, the action of suxamethonium cannot tie reversed. Severe hepatic disease is a contraindication. (Anectine: Scoline).
sympathomimetics Drugs that have an action similar to adrenaline, and act on both alpha- and beta-adrenoceptors. More selective compounds, such as salbutamol, act on the beta,-adrenoceptors in the lungs and have an increased bronchodilator action. They also relax uterine muscle, and are used to prevent premature labour. Others such as dobutamine and dopamine have a more selective action on the beta,- receptors in the heart, and are referred to as isotropic sympathorninictics.
tacalcitol A vitamin D. derivative used in the treatment of psoriasis as an ointment containing 4 pg/g of the drug. It is applied sparingly once daily at night, and continued as required. Not more than 2 treatments over 8 weeks per year. (Curatoderm).
tacrolimusV A macrolide derivative with marked immunosuppressant properties. It is used in liver and kidney transplantation, and appears to act by suppressing T-cell activation. It may also inhibit the formation of cytotoxic lymphocytes that are concerned
Tel
with graft rejection. See Drug Data Sheet for details of dose and extensive side-effects including neurotoxicity and hypertrophic cirdiomyopathy. (Prograf).
talc A form of magnesium silicate, widely used as a skin dusting powder. It has also been used as a lubricant for surgeons’ gloves, but it may cause a talc granuloma if any reaches the tissues during operation, and glove powders prepared from starch are preferred.
tarnoxifen An oestrogen-receptor
antagonist used mainly in breast cancer, particularly when metastases are present. Dose: 20 mg daily. It is usually well tolerated, but side-effects include hot flushes, dizziness, rash, by
. percalcaciiiia and
an increase in tumour pain. Unlike other oestrogen-antagonists, tamoxifen has no androgenic properties. It has also been used in sonic forms of anovulatory sterility. (Nolvadex). See page 122 an(] Table 8.
tamsulosinV A relatively selective alpha adrenoceptor antagonist. It lowers the tone of bladder and prostatic smooth muscle, and is used in benign prostatic hyperplasia. Dose: 400 mg daily after breakfast with a glass of water. The first dose should be taken in bed to avoid postural hypotension. Other side-effects include palpitations and dizziness and hypotension. (Floniax). See page 164 and Table 28.
tazabactam An inhibitor of betalactamases. It is used in association with some antibiotics to extend the activity against resistant beta - lactamase - producing bacteria. Tazacin is a mixed product containing piperacillin and tazabactam.
tazarotene A retinoid used as an aqueous gel (0.05-0.1 %) in psoriasis. Applied once daily to the affected skin area only. (Zorac).
teicoplanin An antibiotic that acts by interfering with bacterial cell wall development. It has a wide range of activity, but is used mainly in the treatment of severe staphylococcal infections that fail to respond to other antibiotics.
Dose: loo mg initially by i.v. injection, lollowed by 200 nig as a single daily dose, which may be given by i.m. injection. Double doses in severe infections. Side-effects include gastrointestinal disturbances, dizziness, fever and rash (Targocid).

temazepam A mild hypnotic of the nitrazepain type, but with a shorter duration of action. It is useful in the insomnia of the elderly, arid is also of value as a preoperative anxiolytic agent.
Dose: 10-20 ing. Daytime drowsiness is less common than with related drugs. See page 152 and Table 22.
ternocillin A penicillin-type of antibiotic active chiefly against infections due to penicillinase-producing Gram-negative bacteria, with the notable exception of pseudomonas. It is used in respiratory and urinary tract infections due to susceptible organisms.
Dose: 2-4 g daily by injection, but in simple urinary tract infections a single daily dose off g may be effective. (Temopen).
I Tet
inie’tion. (Bricarly]). See page 118 and Table 6.
terfenadine An antihistamine with reduced sedative and other side-effects on the central nervous system. It is effective in hay fever, allergic skin conditions and other allergic states.
Dose: 120 mg daily. Best given alone, as combined use with imidazole antifungal agents or with many other drugs may cause severe reactions. See Drug Data Sheet for details. (Triludan). See page 110 and Table 2.
terlipressin A synthetic form of vasopressin, used to control bleeding from oesophageal varices.
Dose: 1-2 nig i.v., repeated if required 4-6-hourly, (Gl)j)ressin).
tenoxicam A non-steroidal anti-inflamma- tory drug (NSAID) with the actions, uses and side-effects of that group.
Dose: 20 mg as a single daily dose. (Mobillex). See page 105 arid Table 29.
terazocin An alpha-receptor antagonist used in hypertension. It produces a peripheral vasodilation by a blockade of post-synaptic alpha-receptors.
Dose: I mg tit night initially, slowly increase(] up to 10 mg as a single daily dose. Small initial doses are necessary to avoid episodes of syncope during early treatment. Reduced doses are indicated when terazocin is given with thiazide diuretics or other anti-hypertensive agents. Side-effects are dizziness, drowsiness and peripheral oedema. It is also used in benign prostatic hypertrophy.
(I lvpovase). See page 149 arld’I'able 21.
testosterone The androgenic hormone of the testes, which controls the development of the male sex characteristics. It is used mainly in the treatment of hypogonadism
by the i.m. injection of depot preparations    97 of long-acting testosterone derivatives. Subcutaneous implantation of testosterone pellets (200-600 mg) has been used in the treatment of metastatic breast cancer. Side-effects are weight gain, virilism and hypercalcaemia.
tetanus vaccines Preparations of tetanus toxin that has been modified by treatment with formaldehyde. They stimulate the formation of protective antitoxin. They are used for active immunization against tetanus, but for young children a combined diphtheria, pertussis and tetanus vaccine is usually preferred.
terbinafine An antifungal agent that acts by interfering with the synthesis of ergosterol, an essential constituent of fungal cell membranes. It is used in fungal infections of the skin and nails, but it is not effective in pityriasis (Tines versicolor).
Dose: 250 mg daily for 2-6 weeks; half-doses in severe liver or renal impairment. Side-effects are rash, loss of appetite and gastrointestinal disturbances. (I.arnisil).
terbutaline A selective beta-adrenoceptor stimulant and bronchodilator, with the actions, uses and side-effects of salbutamol.
Dose: 7.5-15 mg orally daily, by aerosol inhalation; 250-500 jig by &L, i.rn. or i.v.
tetrabenazine A drug of the haloperidal type, but used mainly in the treatment of Huntington’s chorea and similar disorders of movement.
Dose: 75-200  ing daily. It may cause drowsiness and extra-pyramidal side-effects.
tetracosactrin A synthetic form of corticotrophin.
Dose: it single injection of 250 pg as a test of adrenal cortex function, as after such an injection the level of cortisol in the plasma should rise within an hour. It is also given as single I mg i.m. depot preparation in
the 5-hour diagnostic test. (Synacthen; Synacthen Depot).

tetracycline A wide-range antibiotic very similar both chemically and pharmacologically to chlortetracycline, oxytetracycline, clomocycline, and related compounds referred to generically as the tetracyclines. They all have the same type of action against both Gram-positive and Gram-negative organisms, but exhibit certain differences in solubility, absorption and excretion. These differences are reflected in the different doses, as tetracycline is given in doses of 250 mg 4 times a day, whereas with doxycycline a single daily dose of 100 ing may be adequate. Long treatment with a tetracycline may lead to gastrointestinal disturbance owing to changes in the normal bacterial population of the intestinal tract. The use of the tetracyclines has declined with the emergence of bacterial resistance. They also have the disadvantage of being taken up and staining growing teeth and bone, and so should riot be given to children or used during pregnancy. The absorption of the tetracyclines is reduced by antacids, calcium, iron and milk. See page 249 art(] Table 35.
theophylline A bronchodilator used in the less severe forms of asthma and respiratory disease. (In severe and acute asthma arninophylline is usually preferred.) Dose: 180 nig- I g daily. Side-effects include gastrointestinal disturbances and tachycardia, but are less frequent when long-acting preparations of theophyllinc are used. Such preparations are also useful in the control of nocturnal asthma. These long-acting forms differ, and a patient stabilized on one preparation should not lie transferred to another without good cause. See page 118 and’I'able 6.
thiabendazole An anthelinintic effective against a wide range of intestinal parasites. Also useful in creeping eruption.
Dose: 2.3 iiig/kg daily, up to a maximum of 3 g daily for 2-3 days. Side-effects knore marked in the elderly) are nausea, diarrhoea, rash, yellow vision and
jaundice. Mintezol).
thiamine (vitamin Bj Essential for carbohydrate metabolism, but is used clinically in cases of deficiency, as in beri-beri, or when the diet is restricted. Also of value in the neuritis of pregnancy and alcoholism. Dose: 2-5 nig daily; therapeutic 25- 100 ing daily, in severe deficiency 200-300 nig
doily. severe allergic reactions have followed the i.v. injection of thiamine in high-dose mixed vitamin products such as Pabrinex. Anaphylactic treatment must be immediately available. (Benerva).
thiazides See diuretics and page 150.
thioguanine A cytotoxic agent similar in action and uses to nicrcaptopurine, and used to induce and maintain remission in acute myeloblastic and other leukaernias. Dose: 2 ing/kg, daily. Side-effects are bone marrow depression, nausea and jaundice. Manvis). See page 122 and Table 8.
thiopentone A widely used, short-acting I.V. anaesthetic.
Dose: 100-150 nig initially, repeated at intervals of 10-15 seconds as required. Solutions should be freshly prepared, and great care must be taken to avoid extrava&ttion, a-, the solution is very alkaline and may cause tissue necrosis. Infra-arterial injection is even more dangerous.
(Iniraval Sodium).
a’
thiorid zine A tranquillizing drug related  to chlorpromazine, and used in similar doses for the treatment of schizophrenia and other psychiatric conditions. Unlike most related drugs, it has no antiemetic properties.
Dose: 30-600 ing daily. (Melleril). See page 168 and Table 30.
thiotepa A cytotoxic agent used mainly by infra-cavity instillation, particularly for recurrent superficial tumours of the bladder.
Dose: 15-60 mg dissolved in 60 nil of water, instilled weekly for 4 weeks,
followed by a rest period of 2 weeks before lorther doses are given.
thymoxamine A peripheral vasodilator that is useful in vasospastri and other peripheral ischaemic conditions.
Dose: 160-2,10iiig daily. Side-effects such as headache and facial flushing are usually mild and transient. Treatment should be discontinued after 2 weeks if there is tit) response. (Opilon). See 111oxisylyte.
thyroxine The active constituent of thyroid, but now prepared synthetically. Thyroxine is a powerful metabolic stimulant, specific in neonatal hypothyroidism (cretinism) and myxcredenia. In the former, early diagnosis

A-Z Principal Drugs (oxitropium - pethidine )

Saturday, June 27th, 2009

oxitropium An anticholinergic bronchodilator similar to ipratropium, and used by aerosol inhalation in stable chronic asthma and related conditions.
Dose: 200-300pg (4-6 puffs) daily. . See page 118 and Table 6.

Dose: 1-3 mega-units/min by i.v. infu,ion only, with monitoring. Excessive doses may cause severe uterine contractions with the risk of fetal asphyxiation. (Syntocinon).

oxpentity1fine An aminophyline-like drug used mainly as a vasodilator in periphei at vascular disorders.
Dose: 800-1200 mg. It may cause nausea, flushing and dizziness. Care is necessary in hypotensive states. (Trental).
oxprenoW A beta- ad renoceptor blocking agent with the actions, uses and side-effects of propranolol. It also has anxiolytic properties, and may reduce the symptoms of transient stress such as tremor and palpitations.
Dose: 60-480 mg daily. (Slow- Trasicor). See page 148 and Table 21.
oxybuprocaine A local anaesthetic for ophthalmic use, including tonometry, as a 0.4% solution.
oxybutynin An anticholinergic antispasmodic that promotes relaxation of the detrusor muscle of the bladder.
Dose: in urinary incontinence, 10-20 ing daily; 10 mg daily for children with neurogenic bladder instability. Side-effects are those of anticholinergic drugs generally. (Cystrin; Ditropan). See page 174.
toxycodone A powerful narcotic analgesic with a prolonged action. Used as suppositories of 30 mg in terminal care.
oxypertine A tranquillizer with a chlorpromazine-like action, and used in anxiety neuroses, psychoses and schizophrenic states.
Dose: 30-60 mg daily in anxiety states; up to 300 nig daily in schizophrenia.In higher doses it may cause nausea, dizziness and drowsiness. See page 168 and Table 30.
paclitaxelk’ A new cytotoxic agent originally obtained from the bark of the Pacific Yew. It prevents mitosis and inhibits cell growth by stabilizing microtubule production. It is used by specialists for metastatic ovarian cancer not responding to platinum therapy. Premedication is necessary to prevent severe hypersensitivity reactions. (Taxol). See page 122 and,rable 8.
pamidronate disodium A bisphosphonate with the actions and uses of etidronate. It is used mainly in the hypercalcaemia of malignancy, as it inhibits the development of active osteoclasts.
Dose: by i.v. infusion 10-90 mg or more according to the degree of hypercalcaemia. The initial response may occur within 24-48 hours. Dose in Paget’s disease of bone, 30 nig weekly. Care is necessary in marked renal impairment. (Aredia).
pancreatin A preparation containing the pancreatic enzymes, trypsin, lipase and amylase. It is used to aid the digestion of fats, proteins and carbohydrates in cystic fibrosis and pancreatitis. Some high-strength products have caused fibrotic strictures of the large bowel.
pancuronium A non-depolarizing or competitive muscle relaxant that has little histamine-releasing or cardiovascular action.
Dose: 50-100 pg/kg i.v. initially with Supplementary doses of 10-20 pg/kg as required. (Pavulon).
oxytetracycline (Terramycin). See tetracv-
oxytocin The oxytocic fraction of pituitary extract, but now made synthetically. Used for the induction and maintenance of labour, and to control post-partum haemorrhage, either alone or in association with ergometrinc.
pantoprazoleV A proton pump inhibitor similar to omeprazole, used in peptic ulcer and reflex oesophagitis.
Dose: 40 mg daily with breakfast. The tablets must be swallowed whole with water, and not chewed or crushed. (Proteunfl. See page 162 and Table 27.
papaveretum A preparation of the alkaloids of opium, containing approximately 50% of morphine together with papaverine and codeine. Used mainly by injection, often in association with hyoscine (scopolamine) for premedication. Dose: 7.7-15.4 nig repeated as required.
papaverine One of the alkaloids of opium. It has little analgesic action, and has been used mainly as a smooth muscle relaxant in peripheral vascular diseases. More recently it has been used by intracavernosal injection in the treatment of impotence.
paracetamol A widely used mild analgesic with few side-effects except in large doses. It differs from aspirin in the absence of any anti-inflammatory action.
Dose: 2-4 g daily. Paediatric suppositories of 125 mg are available. Overdose may cause severe liver damage (see acetylcysIcinc).
paraffin A generic name for hydrocarbon mixtures. Soft paraffin is the common ointment base; liquid paraffin is a lubricant laxative. Hard paraffin was used in the wax bath treatment of rheumatic conditions.
paraldehyde A colourless liquid with a strong characteristic odour. It was once used as a chloral-like sedative causing little respiratory depression; now given by deep i.m. injection in status asthinaticus. Dose: 5-10 nil. Occasionally given in similar doses by rectUril, diluted with saline or arachis oil. Discoloured paraldehyde must not be used.
paroxetine A selective inhibitor of sero(011111 uptake in the central nervous system, and indicated in the treatment of depression.
Dose: 20 ing daily, initially in the morning, with food, slowly increased as required to 50 mg daily. It should not be given with any other drug likely to increase serotonin uptake. Side-effects are nausea, drowsiness and insomnia. Extrapyramidal reactions may occur more often with paroxetine. (Seroxat). See page 128 and Table i I.
penciclovir An antiviral agent used as a 1% cream for cold sores (Herpes kabialis). Treatment should be started as soon as possible by applying the cream every 2 hours for 4 days. (Vectavir). See page 144 anti Table 19.
penicillarnine A breakdown product of penicillin which has the power of combining with certain metals to form a water-soluble, non-toxic complex that is excreted in the urine. It is used in Wilson’s disease, which is due to the retention of copper in the body, in poisoning by lead and mercury, in chronic active hepatitis (after the condition has been controlled), in cystinuria, and in severe rheumatoid arthritis in which it has an action similar to that of gold.
Dose: in Wilson’s disease, 1.5-2 g daily before food for sonic months. In chronic hepatitis, 500 mg daily initially, slowly increased over some weeks to 1.25g daily. In rheumatoid arthritis, 125-250 trig daily initially before food, slowly increased at monthly intervals with maintenance doses of 500-750 mg daily. Patients should be warned that the response in rheumatoid arthritis is slow. In cystinuria, 1-3 g daily with adequate fluids, ad iusted later to maintain the urinary cysteine level below 200 mg/I. Dose in heavy metal poisoning, 2g daily. Side-effects include nausea, loss of taste, rash and thrombocytopenia. Blood Counts during treatment are essential and patients should be advised to report most side-effects. A late onset rash may require cessation of treatment. (Distarnine; Pendramine). See page 165 and Table 29.
penicillin, benzyl penicillin, penicillin G I lie first of the antibiotics. It acts by pre venting the development of the bacterial cell wall, but some groups of organisms vary widely in the degree of sensitivity to penicillin, and it is inactivated by penicillinase-producing organisms. Penicillin is inactive orally, and so is given by i.m. injection, but as it is rapidly excreted the action is relatively brief. Derivatives such as procaine-penicillin have a longer action (penicillin V is an orally active derivative). The main side-effect is hypersensitivity, and sensitivity to one penicillin extends to any other penicillin, and may also include sensitivity to the related cephalosporins. High doses of penicillin, especially in patients with renal insufficiency, may occasionally cause cerebral irritation and encephalopathy. Cloxacillin and amoxycillin are derivatives of penicillin active against resistant staphylococci; ampicillin has a wide range of activity against Gram-positive and Gram-negative organisms; piperacillin and ticarcillin are active against Pseudomottas acruginosa.

pentaerythitol tetranitrate A vasodilator with properties resembling those of glyceryl trinitrate, but with a more prolonged action. Used mainly in the prophylaxis of angina as side-effects are relatively infrequent.
Dose: 60-240 mg daily. (Mycardol). See page 114 and Table 4.
pentamidine A synthetic drug used in the treatment ofPneutnocystiscarinii pneumonia in AIDS and other immunocompromised patients, as an alternative to co-trimoxazole.
Dose: 4 nig/kg daily by i.v. infusion for 14 clays or more, or by inhalation of a nebulized solution. Other dosage schemes are used in the treatment of’trypaiiosomiasis and leislunaniasis. Severe reactions, particularly hypotension, may occur, and pentamidine should be used only under expert supervision. (Pentacarinao.
pentastarch A starch-derived plasma substitute used as a 10% solution in burns and septicaemia.
Dose: by i.v. infusion 500 nil-21.. (Haes.
See hetastarch.
tpentazocine A powerful analgesic of the morphine type, but less likely to cause addiction, although dependence may occur with long treatment.
Dose: 100 -400 nig daily after food, up to 360 nig daily by injection. Suppositories of 50 mg are available. Hallucinations ions are an occasional side-effect. It should be
avoided after myocardial infarction as it may increase the cardiac load. Other side effects include dizziness, nausea, tachycardia and rash. It should be avoided in opioid-dependent patients. (Fortral).
pentostatin A potent cytotoxic agent used in hairy cell leukaemia. It is an inhibitor of adenosine deaminase, and may affect RNA synthesis and cause DNA breakdown.
Dose: i.v. under specialist supervision, 4 ing/ni’every other week, continued up to 6 months unless a remission has been achieved. Side-effects include myelosuppression, leukopenia, renal and liver toxicity and rash. Blood counts are necessary during treatment. (Nipent). See page 122.
peppermint oil Aromatic carminative. Dose: 0.2 -0.4 ml. (Colpermin; Nlintec).
pergolide A dopamine agonist with a stimulating action on both D, and D, receptors. It is used in the auxiliary treatment of parkinsonism, and combined treatment may permit a reduction in the dose of levodopa and its side-effects. Dose: 100 jig daily initially, slowly increased at 3-day intervals according to response, with care taken to avoid initial hypotension. Other side-effects include nausea, diarrhoea, confusion and hallucinations. (Celance). See page 160 and
pericyazine A tranquillizer of the chlorpromazine type with similar uses and side-effects. It is used mainly in schizophrenia and severe anxiety states.
Dose: 15-75ingdaily, slowly Y increased according to need up to 300 111g. ( Neulactil). See page 168 and Table 30.
perindopril A long-acting ACE inhibitor used in the control of essential hypertension not responding to other drugs. Dose: initially, it single daily dose of 2 mg (before food), subsequently adjusted up to a maximum of 8 nig daily. Diuretic therapy should first be withdrawn for 2-3 days, and renal function should be assessed before and during treatment. It is also used as supplementary therapy in heart failure in doses of 2-4 ing. (Coversyl). See page H8 and Table 21.
permethrin An insecticide used as 1% cream for head lice, and 5% cream for scabies. (Lyclear).
perphenazine A tranquillizer with the actions, uses and side-effects of chlorpromazine, but it is less sedating, and effective in lower doses.
Dose: psychiatric and antiemetic, 12-24 nig daily. It is sometimes useful in the control of, intractable hiccup. (Fentazin). See page 168 and Table 30.
pethidine A synthetic analgesic with spasmolytic properties. Widely employed as an alternative to morphine for pre- and post-operative use. Of value in obstetrics as it has a less depressant action than morphine on the respiration.

A-Z Principal Drugs (clobazam - co-dydramol)

Wednesday, June 24th, 2009

clobazam A benzodiazepine tranquillizer with the actions and uses of diazepam, but with reduce(] sedative effects. It is used mainly in the short-term treatment of anxiety.
Dose: 20-30 mg as a single nightly dose. III severe anxiety larger but divided doses niav be given under medical control. It is also useful in the auxiliary treatment of epilepsy. (Frkiuni). See page [ 17 and'i'able.5.
clobetasol A potent corticosteroid used as a cream or ointment (0.05%) in the short-term treatment of severe inflammatory skin conditions not responding to less powerful drugs. The application should be used sparingly as absorption with systematic and local side-effects may occur with excessive or prolonged treatment. (Dermovate).
clobetasone A locally acting corticosteroid, used as a cream or ointment (0.05%) in eczema and inflammatory skin conditions not responding to less potent drugs. (Fumovate).
be withdrawn. Clofibrate may potentiate tile action of oral anticoagulants.
clomiphene An anti-oestrogen used to stimulate ovulation in some types of anovulatory sterility.
Dose: 50 mg daily for 5 days a month, repeated if ovulation does not occur, Its use has resulted in occasional multiple births. If pregnancy does not follow tip to 6 courses, further treatment is of little use. Side-effects are hot flushes, and abdominal discomfort; visual disturbances indicate that treatment should be withdrawn. Contraindicated in hepatic disease and ovarian neoplasm. (Cloinid; Scroplictic).
clomipramine A tricyclic antidepressant with the actions, uses and side-effects of inupramine and related drugs, but with reduced sedative properties.
Dose: 30-150 mg daily orally; up to
150 nog daily by im. injection. (Anafranil). See page 128 and Table 11.
clodronate sodium A bisphosphonate used like etidronate and pamidronate in the hypercalcaemia of malignancy.
Dose: 1.6-3.2 g daily as a single dose
I hour before or after food. May also be given i.v. by infusion as a single daily dose of 300 mg for 7-10 days. Long oral treatment is necessary, and serum calcium and phosphate levels should be checked. Side-effects are nausea and diarrhoea. (Hollefos; Loron).
clofazimine An antileprotic agent given in association with dapsone and rifampicin to prevent the incidence of resistance. Dose: 300 Ing monthly; in lepra reactions, 300 ing daily for 3 months. It may cause discoloration of the urine, skin and lesions. (Lunprcric).
clofibrate A plasma lipid-regulating agent used in hyperlipidaernia in conjunction with dietary measures, to reduce excessive plasma levels of cholesterol and
t riglycerides.
Dose: 2 g daily, with regular checks on plasma lipid levels. Side-effects are transient nausea and abdominal discomfort.
It increases the biliary excretion of cholesterol, and gall stones are a contraindication. A myosins-like reaction may occur in renal impairment, and the drug should
clonazepam A benzodiazepine with a marked anticonvulsant action of value in all types of epilepsy.
Dose: I mg daily initially, increased LIP to 8 nog daily according to need. fit status epilepticus, I mg by slow i.v. injection, but apnoea and hypotension, requiring prompt treatment, may occur. Side-effects include drowsiness, dizziness and irritability and occasionally, paradoxical aggression. (Rivotril). See page 136 and Table 15.
Clonidine A centrally acting antihypertensive pertensive agent, now used less frequently.
Dose: 150-300pg daily initially, increased it required up to 1.2 mg daily. Doses of 150-300 pg have been given by slow i.v. injection. Sudden withdrawal of the drug may provoke a I P
hy ertensive crisis.
(Catapres). Clonidine is also used in doses of 100 pg daily in the prophylaxis of migraine. (Dixarit). The side-effects include sedation, dry mouth, fluid retention and bradycardia. See pages 154 andTible 21.
clorazepate A benzodiazepine tranquillizer with the actions, uses and side-effects of diazepam. Used mainly in the short-term treatment of anxiety.
Dose: 7.5-22.5 mg daily, or it single dose of I  mg at night. (Tranxene). See page 117 and Table 5.

clotrimazole An antifungal agent used local]) in vaginal candidiasis.
Dose: 104-200 mg as vaginal tablets or pessaries for nightly insertion. Also used as a 1% cream, lotion or dusting powder for fungal infections of the skin and cars. Side-effecis are local irritation and erythema. (Canestall).
cloxacillin An acid-stable, semi-synthetic penicillin that is not broken down by the enzyme penicillinase, and so is effective in infections due to penicillin-resistant staphylococci.
Dose: 2 g daily before lbod. In severe infeL bons 250-500mg by injection 6-hourly. Now largely replaced by flucloxacillin. The side-coccus are those of the penicillins generally. (Orbenin).
antibacterial action, but when given with a penicillin the antibiotic is able to
penetrate into the cell without loss of
activity. The combination is of value in    33 infections due to penicillin-resistant penicillinase-producing bacteria, including most staphylococci.
Dose: as amoxycillin 750 mg daily, doubled in severe infections, or 3-4 g daily by slow i.v. injection. The side-effects, are similar to those of arnpicillin, but a posttreatment reaction is cholestatic jaundice. (Augmentin).
co-beneldopa tablets of levodopa and henzerazide. (Madopar). See levodopa.
cocaine A local anaesthetic. Still used occasionally in ophthalmology as a 2% solution, often with homatropine.
clozapine A potent but potentially toxic dopamine-receptor blocking agent used in schizophrenia resistant to other drugs.
Dose: 12.5-50 mg daily initially (with care -risk of hypotension), slowly increased to 300 mg daily according to need. A serious side-effect is neutropenia that may lead to agranulocytosis, and treatment must be
Linder hospital supervision with regular blood monitoring. Patient, doctor and hospital pharmacist must be registered with the Clozaril (clozapine) Patient
Monitoring Service to maintain the necessary strict control of treatment. (Clozaril).
coal tar Tile black viscous liquid obtained from the distillation ofcoal. It is used mainly as Zinc and Tar Paste in psoriasis and atophic eczema.
co-amilofruse tablets of the diuretics ainiloricle and frusemide. (Fruinil; Lasoride).
co-amilozide Tablets of the diuretics amiloride and hydrochlorothiazide. (Moduretic).
co-amoxicla A mixture of clavulinic acid and amoxycillin.The resistance to penicillin by staphylococci and other organisms is due to penicillinases such as beta-lactamase in the bacterial cell wall. Those enzymes inactivate penicillin before it call enter the cell and exert its antibacterial action. Such inactivation can be prevented by inhibitors of beta-lactamase such as clavidanic acid. That acid has no
co-careldopa Tablets of levodopa and carbidopa. (Sinemet). See levodopa.
co-codamol Tablets of codeine and paracetamol.
co-codaprin Tablets of codeine and aspirin.
co-darrthramer Tablets of danthron and poloxamer.
cod-liver oil A rich source of vitamins A and 1). It is used as a dietary supplement to improve general nutrition, promote calcification and prevent rickets.
Dose: 2-10 in[ daily.
codeine One of the alkaloids of opium. It depresses the cough centre and is used in the treatment of useless cough. It also reduces intestinal motility, and is useful in the symptomatic treatment of diarrhoea. It also has mild analgesic properties, and is present with aspirin in co-codaprin and similar preparations. In large doses the constipating action may be a disadvantage. Dose: 10 60 mg.
co-dergocrine A cerebral vasodilator, sometimes used in the treatment of senile dementia.
Dose: 1.5 mg daily, but the response is unreliable. Side-effects include nausea, rash and bradycardia. (Hydergine).
co-dydramol Tablets of dihydrocodeine and paracetamol.

A-Z Principal Drugs (chlorpropamide - cephamandole)

Wednesday, June 24th, 2009

cephamandole A cephalosporin more resistant to inactivation by penicillinases. It is of value in serious infections resistant to other antibiotics.
Dose: 2-12 g daily by i.m. or i.v. injection. : Kellidol). See page 248 and Table 34.
cephazolin A cephalosporin with the
general properties of the group.
Dose: 1-12 g daily by injection. (Kefzol). See page 248 and Table 34.
cephradine A cephalosporin active orally as well as by injection.
Dose: 1-2 g orally daily; in severe infeclions 2–8g daily by injection. (Velosef). See page 248 .
certoparin A low molecular weight form of heparin. Used in prophylaxis of venous thromboembolism.
Dose: 3000 units once a day by s.c. injection (1-2 hours before surgery) for 7-10 days. (Alphaparin). See enoxaparin.
cetirizine A slower-acting antihistamine with reduced sedative effects, as it does not pass the blood-brain barrier to any extent. The anti-cholinergic side-effects are also reduced.
Dose: 10 nigat night. (’Lirtels). See page 110 and Table 2.
cetrinnide A detergent with some antiseptic properties. It is used chiefly in association with chlorhexidine.
charcoal Activated charcoal is a powerful adsorbent, and is used in the treatment of overdose or poisoning by many toxic drugs by preventing further absorption. Dose: 50g orally. It is also used in the charcoal - haenioperfusion system to promote elimination from the circulation of sonic already absorbed poisons. Charcoal has also been used as impregnated dressings to deodorize foul smelling wounds and ulcers,
chenodeoxycholic acid A bile acid
derivative that has it solvent action on cholesterol-containing gallstones, and it is useful when surgical removal of the stones is contraindicated.
Dose: I g once daily, but prolonged treatment is necessary. Side-effects are diarrhoea and pruritus, and ursodcoxycholic acid, which has fewer side-effects, is often preferred. Chenodeoxycholic acid is not suitable for the dissolution of radio-opaque gallstones. (Chendol; Chenofalk).
chloral hydrate A water-soluble hypnotic with a rapid action that is useful in the treatment of insomnia in children and the elderly.
Dose:    g. It must be given well-diluted to reduce the gastric irritant side-effects, and is contraindicated in gastritis, and severe renal, hepatic and cardiac disease. (Notre). Chloral betaine (Well-dorm) is a less irritant alternative. See page 152 and Table 22.
chlorambucil An orally active cytotoxic drug used mainly in the treatment of lymphomas and chronic lymphocytic leukaemia.
Dose: 100-200 pgfkg daily for 4-8 weeks. It k sometimes used as an immunosuppressant in the treatment of rheumatoid arthritis in doses of 2.5-7.5 mg daily. Chloranibucil is generally well tolerated, [)of [)one marrow depression may occur, and haematological control during treatment is essential. (Leukeran). See page 122 and Table 8.
chloramphenicol A wide-range, orally active antibiotic but now used only in life-threatening infections where other drugs arc unsuitable.
Dose: 2g daily orally, but in severe infections, -So niglkg daily by i.v. injection. Care is necessary when giving chloramphenicolo infants as it may cause so-called ‘grey syndrome’. Side-effects include nausea, neuritis and aplastic anaemia. Chloromycetin is also used locally in skin, eye and ear infections. (Chloromycetin; Kcinicetine).
chlordiazepoxide A benzodiazepinc used mainly in [tic short-term treatment of anxiety and alcoholism.
Dose: 30 mg daily, increased in severe anxiety up to 100 mg daily, with half closes fix elderly patients. Withdrawal of treatment should be gradual to avoid rebound effects. Side-effects include dizziness, drowsiness and ataxia. Prolonged use carries the risk of dependence. (Librium).

chlorhexidine An antiseptic of high potency and a wide range of activity, although it is ineffective against spores and viruses. For preoperative skin preparation, a 0.5% solution in alcohol is often used; an aqueous solution (0.05%) is for general topical application. Chlorhexidine is also used as a  solution for bladder irrigation. A general purpose cream and an obstetric cream are also available. Solutions of chlorhexidine may become contaminated with Pseudomonas, and all aqueous solutions should he sterilized. (1-libitane).
irreversible retinal damage. Other side-effects are gastrointestinal disturbances, rash and prutiros. (Axioclor,). Swe page 16.3.
chlorothiazide The first of the thiazide diuretics, now largely replaced by bendrofluazide and similar drugs. Dose: 1 -2 g daily in oedematous states; 0.i-1 g daily in hypertension. Potassium supplements may be necessary with extended treatment. (Saltiric). See page 148 and Table 21.
29
chlormethiazole A sedative with anticonvul’ant properties.
Dose: in severe insomnia in the elderly, 200-400nigorally; in alcohol withdrawal conditions, 400-800 mg initially, reduced and withdrawn over a 9-day period. It may also be given by i.v. infusion as a 0.8% solution. Chlonnethiazole has also been given by injection in status epilepticus and the toxaemia of pregnancy in doses according to need and response. Side-effects are sneezing, gastrointestinal disturbances and headache. (Heminevrit) See page 136 and Table Ii.
chloroform Once widely used as a general anaesthetic, but now obsolete. Used as chloroform -water in mixtures as a preservative and flavouring agent, and for its carminative effects.
chloroquine An antimalarial drug used for both prophylaxis and treatment of benign and malignant tertian malaria. It should be noted that chloroquine- resistant strains of Plasmodiunifialciparurn are becoming increasingly common, and a return to treatment with quinine may be necessary. Dose: adult prophylaxis, 300nig once a week; (Or treatment of an attack of malaria, oWnig initially followed by 300mg daily for 2-3 days. Seriously ill or vomiting patients should be given 2(XI-300 ing by Lin. or slow i.v. injection, repeated once ifncccssary L)cfi)rc oral treatment can be tolerated. Other dosage schemes are also in use, and for details reference should be made to standard works on the treatment of malaria. It has also been used in hepatic anioebiasis, but nietronidazole is now often preferred. Chloroquinc also has an action in rheumatoid inflammatory conditions similar to that of penicillamine, dose: 150 mg daily after food. Such use requires care, as extended therapy is necessary, and the drug may cause corneal opacity and
chloroxylenol A general purpose antiseptic present in some popular products. Of no value against Pseudornonas. aeruginosa or Proteus.
chlorpheniramine An antihistamine with the action, uses and side-effects of the group, including drowsiness.
Dose: 16-24 mg daily: 10-20 mg by Lin. or .c. injection as required. (Piriton). See page 110 and Table 2.
chlorpromazine A powerful tranquillizer or antipsycholic agent with a wide range of activity on the central nervous system. It is widely used in the treatment of schizophrenia and other psychoses, in agitation and tension, and the management of refractory patients. It is also effective as an antienietic in terminal illness; in the short-term treatment of severe anxiety; and for the control of intractable hiccup.
Dose: initially 75 mg orally daily, slowly increased as required. In psychotic states, Lip to I g daily. Single doses of 25-50 mg may be given by deep imi. injection in acute conditions. Suppositories of 100 mg are also available. Side-effects include extrapyramidal and anticholinergic symptoms, drowsiness, hypotension, weight gain, rash, jaundice and haemolytic anaemia. prolonged use may cause pigmentation of the skin and eyes. Care is necessary in hepatic and renal dysfunction. Skin sensitization may occur after Contact With solutions of chlorpromazine. Margactil). See page 168 and’I'able 30.
chlorpropamide A long-acting hypoglycaemic agent of the sulphonylurea type. It is effective only if some insulin-secreting cells are still functional. It is used mainly in mild diabetes mellitus occurring in middle-aged patients not responding to dietary control. Its long action makes it unsuitable for elderly diabetics.