Aug
13
Econazole - Efalizumab - Eflornithine - Enalapril - Enfuvirtide - Entacapone
August 13, 2009 | Leave a Comment
Generic Name
Econazole (ee-KON-uh-zole) 92
Brand Name Spectazole
Type of Drug Antifungal.
Prescribed For
Fungal infections of the skin, including athlete’s foot. jock itch, and ringworm.
General Information
Econazole nitrate can kill fungal organisms that may have penetrated to deep layers of the skin. Very small amounts of econazole are absorbed into the bloodstream.
Cautions and Warnings
Do not use econazole if you are allergic or sensitive to any of its ingredients.
Do not apply econazole cream in or near your eyes.
Long-term application of this product to large areas of skin may cause liver damage.
Possible Side Effects
♦ Most common: burning, itching, stinging, and redness in the areas to which the cream has been applied.
Drug Interactions None known.
Usual Dose
Adult: Apply enough of the cream to cover affected areas with a thin layer 1-2 times a day.
Overdosage
Accidental ingestion may cause nausea, upset stomach, drowsiness, and liver inflammation or damage. Call your local poison control center for more information. If you seek treatment, ALWAYS bring the prescription container.
Special Information
Clean the affected areas before applying econazole cream, unless otherwise directed by your doctor. Dry the infected area thoroughly and wear loose-fitting clothes to keep the area cool and dry.
Call your doctor if the treated area burns, stings, or becomes red.
This product can be expected to relieve symptoms within 1 or 2 days after you begin using it. Follow your doctor’s directions for the complete 2-4-week course of treatment to gain maximum benefit. Stopping the drug too soon can lead to a relapse.
If you forget a dose of econazole, apply it as soon as you remember. If it is almost time for your next dose, skip the one you forgot and continue with your regular schedule. Do not apply a double dose.
Special Populations
Pregnancy/Breast-feeding: When given by mouth to pregnant animals in high doses, econazole was toxic to the fetus. It should be strictly avoided during the first 3 months of pregnancy. During the last 6 months of pregnancy, it should be used only if absolutely necessary.
Econazole may pass into breast milk. Nursing mothers who must take this drug should consider using infant formula.
Seniors: Seniors may take this drug without special restriction.
Efalizumab (ef-ah-LIZ-u-mab)
Brand Name Raptiva
Type of Drug
Immune system suppressant.
Prescribed For
Chronic to severe plaque psoriasis.
General Information
Efalizumab is a manmade antibody that works by binding to specific areas of certain white blood cells called leukocytes. This prevents the leukocytes from interacting with other cells and interrupts inflammation that is involved in the development of patches of psoriatic skin. The molecule that efaluzimab interacts with is found on many other key cells found in the immune system, and this is the source of many of the drug’s more serious side effects.
Cautions and Warnings
Do not use this drug if you are allergic or sensitive to any of its ingredients.
People taking efalizumab are at a greater risk of infection because it suppresses the immune system. Contact your doctor if you develop any kind of infection, including a common cold. Serious infections may require hospitalization.
The chances of malignancy may be increased by efalizumab because it suppresses the immune system. People with any type of cancer should not use this drug.
Efalizumab may lead to bleeding because it can cause a drastic reduction in blood-platelet counts. People with a history of low blood-platelet counts should be extremely cautious about using efalizumab.
Psoriasis can get worse or recur during or after efalizumab treatment in a small number of people. Call your doctor immediately if your condition worsens while you are taking efalizumab.
Possible Side Effects
Headache, fever, nausea, and vomiting are common alter taking the very first dose of elaki7umab. A “conditioning” dose of about 0.3 mg per lb. of body weight is often given to minimize these reactions.
V Most common: headache, infections, chills, nausea, and pain.
V Common: muscle aches, flu-like symptoms, itching, and fever.
Possible Side Effects (continued)
✓ Less common: back pain, arthritis, lung inflammation, and
acne.
♦ Rare: psoriasis, arthritis, joint pain, malignancy, low blood-platelet count, and drug allergy or sensitivity. 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.
Drug Interactions
• Efalizumab is an immune system suppressant and should not be combined with other immune suppressant drugs because of the increased risk of infection and malignancy.
• Combining vaccines (live and acellular) with efalizumab may exaggerate the body’s response to the vaccine and increase the risk of developing the disease against which the vaccination is being administered. People taking etalizurnab should not receive vaccines.
Food Interactions None known.
Usual Dose
Adult: 0.3 mg per lb. of body weight to start. Then about 0.5 mg per lb. of body weight once a week on the same day. The maximum dose is 200 mg by subcutaneous injection. Mix your dose immediately before it is to be injected and throw away any unused medicine.
Child: not recommended.
Overdosage
Doses up to 4 times the recommended dose have been taken for 10 weeks without additional side effects. However, overdose victims should be taken to a hospital emergency room for observation. ALWAYS bring the prescription bottle or container.
Special information
See your doctor regularly while you are taking efaluzima6. Regular blood tests are required to make sure your blood platelets are not unusually low.
Tell your doctor if you gain or lose weight, since doses of efaluzimab are based on how much you weigh.Tell your doctor about all medicines you are taking including other medicines for psoriasis, non-prescription drugs, vitamins,
and herbal supplements.
Store unused medicine in the refrigerator. Throw away medicine that has been mixed but not used.
Call your doctor immediately if you develop bleeding gums, black-and-blue marks, any kind of infection, begin to bruise easily, or if you are told by another doctor that you have any kind of cancer.
This drug is given by injection under the skin. For more information on how to properly administer this drug, see page 1242.
Special Populations
Pregnancy/Breast-feeding: It is not known how efaluzimab will affect a growing fetus. Animal studies using doses equal to 30 times the human dose showed no adverse effects. While animal studies of efaluzimab reveal no damage to the fetus, this drug should be used only during pregnancy after carefully weighing its potential benefits against its risks.
It is not known if efaluzimab passes into breast milk, although it might affect the nursing infant’s developing immune system. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors should be cautious about using efaluzimab because of the increased risk of infection.
Generic Name
Eflornithine (eh-FLOOR-nih-thene)
Brand Name
Vaniga,
Type of Drug
Hair growth retardant.
Prescribed For
Removal of unwanted facial hair by women.
General Information
This drug has only been studied for its ability to prevent hair growth on the face and chin and should not be used on other body areas. It works by interfering with enzymes in the skin necessary for hair growth, slowing the rate at which hair will grow. Improvement may be seen as soon as 4-8 weeks after you start using eflornithine, but the condition will return within 8 weeks after you stop using it.
Cautions and Warnings
Do not use eflornithine if you are allergic or sensitive to any of its ingredients.
For external use only; do not ingest.
Possible Side Effects
Eflornithine side effects are similar to those of a placebo (sugar pill).
✓ Most common: acne, bumps, or small pustules on the skin. V -Common: stinging.
✓ Less common: headache, dizziness, burning, itching, redness, tingling, irritation, rash, hair loss, upset stomach, and appetite loss.
✓ Rare: fainting, ingrown hairs, inflamed hair follicles, facial swelling, nausea, bleeding, contact dermatitis, inflammation of one or both lips, herpes breakout, numbness, and dilated blood vessels and pores on the nose and cheeks. Contact your doctor if you experience any side effect not listed above.
Food and Drug Interactions None known.
Usual Dose
Adult and Child Me 11 anti over): Apply a thin layer of cream to ai ected areas and rub in thoroughly 2 times a day at least 8 hours apart. Do not wash your face until at least 4 hours after you have applied eflornithine cream. Wait at least 5 minutes after hair removal to apply eflornithine.
Child (under age 12): not recommended.
Overdosage Little is about the effects of eflornithine overdose or acci-
Li known
dental ingestion. Call your local poison control center for more information. ALWAYS bring the prescription container.
Special Information
If you forget to apply a dose of eflornithine, apply it as soon as you remember. Bear in mind that at least 8 hours must elapse between doses and you cannot wash the area for another 4 hours after application. If it is almost time for your next dose, skip the dose you forgot and continue with your regular schedule.
This product slows hair growth. It is not a depilatory. You will have to continue shaving, tweezing, or using another hair removal technique.
Wait several minutes after application of eflornithine before applying cosmetics or sunscreen.
Use only on your face and neck.
Call your doctor if your skin becomes irritated or if you develop other side effects. If skin irritation continues, you may have to stop using eflornithine.
Special Populations
Pregnancy/Breast-feeding: Eflornithine cream may cause birth defects. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
It is not known if this drug passes into breast milk. Nursing mothers should use infant formula.
Seniors: Seniors may use eflornithine without special restriction.
Generic Name
Enalapril (uh-NAL-uh-pril)
Brand Name
Vasotec
Combination Product
Ggner;c Ingredients: Enalapril + Hydrochlorothiazide RE Vaseretic
Type of Drug
Angiotensi n -converting enzyme (ACE) inhibitor.
Prescribed For
Hypertension (high blood pressure), heart failure, diabetic kidney disease, and heart attack treatment when the function of the left ventricle has been affected. Also prescribed for kidney failure, kidney hypertension, managing people with a high risk of heart disease, chronic kidney disease, and preventing a second stroke.
General Information
Enalapril maleate and other ACE inhibitors work by preventing the conversion of a hormone called angiotensin I to another hormone called angiotensin II, a potent blood-vessel constrictor. Preventing this conversion relaxes blood vessels, thus reducing blood pressure and relieving symptoms of heart failure. Enalapril also affects the production of other hormones and enzymes that participate in the regulation of blood-vessel dilation. Enalapril begins working about 1 hour after you take it and continues to work for 24 hours.
Cautions and Warnings
Do not take enalapril if you are allergic or sensitive to any of its ingredients. Severe sensitivity reactions can occur in hemodialysis patients taking enalapril or those undergoing venom immunization.
Swelling of the face, extremities, or throat has been known to occur with enalapril, which can be dangerous (see “Special Information”).
Enalapril occasionally causes very low blood pressure.
Enalapril may affect your kidney function, especially if you have congestive heart failure. Your doctor should check your urine for protein content during the first few months of treatment. Dosage adjustment of enalapril is necessary if you have reduced kidney function.
Enalapril can affect white-blood-cell counts, possibly increasing your susceptibility to infection. Your doctor should monitor your blood counts periodically.
Enalapril may cause serious Injury or death to the fetus if taken duriRcA pregnancy. Pregnant women should not take enalapril.
ACE inhibitors may be less effective in some black patients with high blood pressure, especially when dietary salt intake is high. Nevertheless, they should still be considered useful blood pressure treatments. Swelling beneath the skin to form welts is more common among black patients.
Possible Side Effects
♦ Most common-. dizziness, fatigue, headache, and chronic cough. The cough usually goes away a few days after you stop taking the medication.
♦ Less common: chest tightness or pain, dizziness when rising from a sitting or lying position, fainting, abdominal pain, nausea, vomiting, diarrhea, bronchitis, urinary tract infection, breathing difficulties, weakness, and rash.
♦ 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.
For additional information about enalapril + felodipine, see Felodipine, page 471.
Drug Interactions
• The blood-pressure-lowering effect of enalapril is additive with diuretic drugs and beta blockers. Any other drug that causes a rapid drop in blood pressure should be used with caution if you are taking enalapril.
• Enalapril may increase the effects of lithium; this combination should be used with caution.
• Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) reduce the blood-pressure-lowering effects of enalapril and other ACE inhibitors. The combination may cause reductions in kidney function.
• Enalapril may increase blood-potassium levels, especially when taken with dyazide or other potassium-sparing diuretics.
• Antacids and enalapril should be taken at least 2 hours apart.
• Capsaicin may trigger or aggravate the cough associated with enalapril therapy.
• Indomethacin may reduce the blood-pressure-lowering effects of enalapril.
• Phenothiazine sedatives and antiemetics may increase the ef - feZIS of enalapril.
• Rifampin may reduce the effects of enalapril.
• The combination of allopurinol and enalapril increases the chance of side effects. Avoid this combination.
• Enalapril affects blood levels of digoxin. More digoxin in the blood increases the chance of digoxin-related side effects, while less digoxin in the blood can compromise its effectiveness.
• Severe sensitivity reactions can occur in those taking allo-
purinol.
For additional information about enalapril + felodipine, see Felodipine, page 471.
Food Interactions
You may take enalapril with food if it upsets your stomach.
Usual Dose
Enalapril
Adult: 5-40 mg a day in 1 or 2 doses. People with poor kidney function need less medication.
Enalapril + Felodipine
Adult: 1-2 tablets a day.
Overdosage
The principal effect of enalapril overdose is a rapid drop in blood pressure, as evidenced by dizziness or fainting. Take the overdose victim to a hospital emergency room immediately. ALWAYS bring the prescription bottle or container.
Special Information
Enalapril can cause swelling of the face, lips, hands, or feet. This swelling can also affect the larynx (throat) or tongue and interfere with breathing. If this happens, go to a hospital emergency room at once. Call your doctor if you develop a sore throat, mouth sores, abnormal heartbeat, chest pain, persistent rash, or loss of taste perception.
Some people who start taking enalapril after they are already on a diuretic (an agent that increases urination) experience a rapid drop in blood pressure after their first doses or when their dosage is increased. To prevent this from happening, your doctor may tell you to stop taking your diuretic 2 or 3 days before starting enalapril or to increase your salt intake during that time. The diuretic may then be restarted gradually.
You may gO dizzy if you rise to your feet too quickly from a sitting or lying position when taking enalapril.
Avoid strenuous exercise or very hot weather because heavy
sweating or dehydration can cause a rapid drop in blood pressure.
While taking enalapril, avoid over-the-counter diet pills, decon-
gestants, and other stimulants that can raise blood pressure. Also,
do not take potassium supplements or salt substitutes containing potassium without consulting your doctor.
If you take enalapril once a day and forget to take a dose, take it as soon as you remember. If it is within 8 hours of your next dose, skip the one you forgot and continue with your regular schedule. If you take enalapril twice a day and miss a dose, take it right away. If it is within 4 hours of your next dose, take 1 dose immediately and another in 5 or 6 hours, then go back to your regular schedule. Never take a double dose.
Special Populations
Pregnancy/Breast-feeding: ACE inhibitors can cause fetal injury or death. Women who are or might become pregnant should not take ACE inhibitors. Sexually active women of childbearing age who must take enalapril must use an effective contraceptive method to prevent pregnancy. If you become pregnant, stop taking the medication and call your doctor immediately.
Small amounts of enalapril pass into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors may be more sensitive to the effects of this drug due to age-related losses in kidney or liver function.
Generic Name
Enfuvirtide (en-M-ir-tide)
fusing to healthy CD4 cells, a key part of the human immune system. This helps fight HIV by having fewer HIV-infected cells as well as a healthier immune system to fight off the HIV virus. Enfuvirtide is always prescribed in combination with other antiviral medicines. It is possible for the HIV virus to become resistant to enfuvirtide, but this drug can work against types of the virus that have become resistant to other anti-HIV therapies.
Cautions and Warnings
Do not take enfuvirtide if you are allergic or sensitive to any of its ingredients. Symptoms of drug allergy can include generalized itching, rash, severe chills, and low blood pressure. In rare cases, enfuvirtide triggers severe hypersensitivity. Patients experiencing symptoms (a combination of rash, fever, nausea, and/or respiratory distress) should stop using enfuvirtide and seek medical attention immediately.
People taking enfuvirtide may be more likely to develop bacterial pneumonia. See your doctor regularly and report any difficulty breathing or unusual respiratory reactions.
Enfuvirtide may raise blood sugar levels, worsen diabetes, or trigger latent diabetes. People with diabetes who take this drug may need to have the dosage of their anti-diabetes medication adjusted.
Possible Side Effects
✓ Most common: allergic skin reaction at the site of injection (symptoms include itching, rash, and swelling of tissue under the skin), diarrhea, nausea, fatigue, and sleeplessness.
✓ Common: tingling in the hands or feet, depression, anxiety, cough, sinusitis, herpes infection, weight loss, appetite loss, weakness, itching, and muscle ache.
✓ Less common: taste changes, small skin tumors, flu infection, constipation, abdominal pain, pancreas inflammation, conjunctivitis and lymph gland inflammation.
‘T Rare: Rare side effects can affect the blood, immune system, kidneys, urinary tract, and central nervous system. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
Enfuvirtide is not broken down in the liver and does not affect liver enzyme systems, so it is not likely to be involved in common drug
interactions.
Food Interactions
None known. Usual Dose
Adult and Child (age 17 and over): 90 mg injected under the skin into the upper arm, thigh, or abdomen twice a day.
Child (age 6-16): 0.91 mg per lb. of body weight twice a day, up to 90 mg per injection. Be sure to increase enfuvirtide dosage as your child’s weight increases.
Child (under age 6): not recommended.
Overdosage
Little is known about the effects of enfuvirtide overdose. Take the victim to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Enfuvirtide is not a cure for HIV It will not prevent you from transmitting the HIV virus to another person; you must still practice safe sex. People taking this drug may still develop opportunistic infections and other complications associated with HIV infection.
This drug is given by injection under the skin. For information on how to properly administer this drug, see page 1242.
Do not use a vial of enfuvirtide if the final solution has particles floating in it. It should be completely clear, colorless, and have no bubbles in the vial.
You may keep solutions of enfuvirtide in the refrigerator and use them for up to 24 hours after they have been mixed. After that, they must be thrown away.
Tell your doctor if you are pregnant, become pregnant, os plan to become pregnant.
Do not stop taking this, or any other anti-HIV medicine, without first consulting your doctor.
Special Populations
Pregnancy/Breast-feeding: While animal studies of enfuvirtide reveal no damage to the fetus, this drug should only be used during pregnancy after carefully weighing its potential benefits against its risks. A national registry has been established to gather information on pregnant women who take this drug.
It is not known if enfuvirtide passes into breast milk. Nursing mothers with HIV should always use infant formula, regardless of whether they take this drug, to avoid transmitting the virus to their child.
Seniors: The effects of enfuvirtide in seniors is unknown.
Generic Name
Entacapone (in-TACK-a-pohn)
Brand Name Comtan
Type of Drug Antiparkinsonian.
Prescribed For
Parkinson’s disease patients for whom levodopa + carbidopa loses its effectiveness between doses.
General Information
Entacapone is always used in combination with levodopa + carbidopa. Some patients experience signs and symptoms of an end-of-dose “wearing-off” effect with these drugs. Entacapone enhances the effect of levodopa + carbidopa by reversing the action of an enzyme known as catechol-O-methyltransferase (COMT), which is primarily responsible for breaking down levodopa in the body.
Cautions and Warnings
Do not take entacapone If yOU are allergic or sensitive to any of At *Ingredients.
Do not take entacapone with phenelzine or tranyleypromine, as a very serious reaction may occur.
People with liver disease should use entacapone with caution as they may accumulate twice as much of this drug in their blood as people with normal liver function.
Entacapone has been rarely associated with the formation of fibrous tissues in unusual places such as the urinary tract and lungs. It has also caused fluid in the lungs.
Entacapone may cause kidney toxicity.
Entacapone may increase the risk of dizziness or fainting when rising from a sitting or lying down position.
Hallucinations have been reported with other Parkinson’s disease drugs.
Possible Side Effects
♦ Most common: difficulty performing voluntary muscle functions, excessive muscle activity, nausea, urine discoloration, and diarrhea.
♦ Common: reduced muscle activity, dizziness, fatigue, constipation, and abdominal pain.
✓ Less common: low blood pressure and fainting when rising from a sitting or lying position, hallucinations, anxiety, agitation, gastritis or other stomach disorders, dry mouth, vomiting, increased sweating, back pain, taste changes, shortness of breath, easy bruising, weakness, and bacterial infection.
♦ Rare: muscle damage or death, high fever, and confusion. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
• Do not mix entacapone with the monoamine oxidase inhibitor (MAGI) antidepressants phenelzine or tranylcypromine. Entacapone may be taken with the MAGI selegiline.
• Other drugs broken down by COMT will also be affected by entacapone. Isoproterenol, epinephrine, ephedrine, norepinephrine, isoetharine, and others will interact with entacapone, even when taken by inhalation. The result may be increased heart rate, wybylh m ias, and excessive changes in Uwd pressure.
• Cholestyramine, probenecid, erythromycin, rifampin, ampicillin, and chloramphenicol may interfere with the elimination of entacapone from the body.
• Entacapone may enhance the effects of sedatives and other nervous system depressants.
Food Interactions
This drug may be taken with or without food.
Usual Dose
Adult: 200 mg with each levodopa + carbidopa dose, up to
1600 mg a day.
Child: not recommended.
Overdosage
Theoretically, a massive entacapone overdose could prove lethal by completely inhibiting COMT throughout the body. There have been no reports of significant entacapone overdose. Doses up to 800 mg have been taken and side effects were mainly abdominal pain and loose stools. Other effects that might be expected include difficulty breathing, loss of muscle coordination, reduced level of activity, and convulsions. Overdose victims should be taken to a hospital emergency room as soon as possible. ALWAYS bring the prescription bottle or container.
Special Information
Always take your entacapone dose together with your levodopa + carbidopa dose. If you forget a dose, take it as soon as you remember. If it is within 2 hours of your next dose, skip the dose you forgot and continue with your regular schedule.
This drug can cause dizziness, nausea, sweating, or fainting when rising quickly from a sitting or lying position, especially at the beginning of treatment.
Increased body movements and twitching, twisting, or uncontrolled tongue, lip, face, arm, or leg movement may occur. If this happens, your doctor may need to adjust your dose of levodopa + carbidopa.
Exercise caution when performing tasks, such as driving, that require coordination and concentration until your body has become accustomed to the effects of entacapone.
Gradually reducing the dose of entacapone decreases some drug side effects.
Rapid withdrawal can cause high fever, sweating, unstable blood pressure, stupor, and muscular rigidity. Patients who stop using entacapone should be monitored.
Entacapone can cause your urine to turn a brownish-orange color. This change is harmless.
Special Populations
Pregnancy/Breast-feeding: Entacapone causes birth defects, miscarriage and abortion in pregnant animals. When this drug is considered crucial by your doctor, its potential benefits must be weighed against its risks.
Entacapone passes into the breast milk of animals but no information on humans is available. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors may take this drug without special precaution.
Aug
1
Cimetidine
August 1, 2009 | Leave a Comment
Generic Name
Cimetidine (sih-MET-ih-dene)
Brand
Tagamet Tagamet HB 91
Type of Drug Histamine H2 antagonist.
Prescribed For
Ulcers of the stomach and duodenum (upper intestine); also used for upset stomach, gastroesophageal reflux disease (GERD), benign stomach ulcer, bleeding in the stomach and duodenum, colorectal cancer, prevention of stress ulcer, hyperparathyroidism, fungal infections of the hair and scalp, herpes virus infection, excessive hairiness in women, chronic itching of unknown cause, skin reactions, warts, acetaminophen overdose, and other conditions characterized by the production of large amounts of gastric fluids. Cimetidine may be prescribed to stop the production of stomach acid during surgery.
General Information
Histamine H2 antagonists work by turning off the system that produces stomach acid and other secretions. Cimetidine is effective in treating the symptoms of ulcer and preventing complications of the disease, although an ulcer that does not respond to another histamine H2 antagonist will probably not respond to cimetidine. Histamine H2 antagonists differ only in their potency. Cimetidine is the least potent; 1000 mg are roughly equal to 300 mg of either nizatidine or ranitidine, or 40 mg of famotidine. These drugs are roughly equal in their ability to treat ulcer disease and their risk of side effects.
Cautions and Warnings
Do not take cimetidine if you are allergic or sensitive to any of its ingredients or any histamine H2 antagonist. Cimetidine has a mild antiandrogen effect, which probably causes the painful, swollen breasts that some people experience after taking this drug for a month or more.
People with kidney or liver disease should take cimetidine with caution because 1/3 of each dose is broken down in the liver and passes out of the body through the kidneys.
Do not self-treat with over-the-counter forms of cimetidine without the advice and supervision of your doctor.
The fact that symptalleviated by cimetidine does not dude the possibility of stomach cancer, which can have symptoms similar to other gastrointestinal (GI) disorders. Make sure your doctor screens for possible malignancy.
these symptoms stop 3-4 days after discontinuing the drug. Call your doctor if this happens to you.
Possible Side Effects
Serious side effects are uncommon.
♦ Most common: mild diarrhea, dizziness, rash, painful breast swelling, nausea and vomiting, headache, confusion, drowsiness, hallucinations, and impotence.
♦ Less common: liver inflammation, peeling or red and swollen rash, breathing difficulties, tingling in the hands or feet, delirious feelings, and oozing from the nipples.
✓ Rare: Cimetidine may affect white blood cells or blood platelets. Some symptoms of these effects are unusual bleeding or bruising, unusual tiredness, and weakness. Other rare side effects are inflammation of the pancreas, hair loss (reversible), abnormal heart rhythms, heart attack, muscle or joint pains, and drug reactions. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
• Separate cimetidine from antacid doses by about 3 hours to avoid reducing cimetidine’s effectiveness. Other drugs that may reduce the absorption of cimetidine are metoclopramide and anticholinergic drugs, including trihexyphenidyl hydrochloride, oxybutynin, and benztropine mesylate.
• Cigarette smoking reverses the healing effect cimetidine has on ulcers.
• Cimetidine may increase the side effects of a variety of drugs, possibly leading to drug toxicity. These drugs include alcohol; aminophylline; oral antidiabetes drugs; benzodiazepine sedatives, except lorazepam, oxazepam, and temazepam; caffeine; calcium channel blockers; carbamweoine; carmustine; chloroquine; tkeCaiTAe; fluorouracil; labetalol; lidoQa« , Tneloprolol; metronidazole; moricizine; mexiletine; narcotic pain relievers; nifedipine; ondansetron; pentoxifylline; phenytoin; procainamide; propafenone; propranolol; quinine; quinidine; tacrine; theophylline drugs, except clyphylline: triamterene; tricyclic antidepressants; valproic acid; and warfarin (a blood-thinner).
• Drugs whose absorption may be decreased by cimetidine are iron, indomethacin, fluconazole, ketoconazole, and tetra-
cycline antibiotics.
• Enteric-coated tablets should not be taken with cimetidine. The change in stomach acidity causes the tablets to disin-
tegrate prematurely in the stomach.
• cimetidine may decrease the effects of digoxin and tocainide.
Food Interactions
None known.
Usual Dose
Adult: 400-800 mg at bedtime; 300 mg 4 times a day with meals and at bedtime; or 400 mg twice a day. To treat GERD-400 mg 4 times a day. Do not exceed 2400 mg a day. Users of Tagamet HB should not take more than 400 mg a day. Smaller doses may be as effective for seniors or those with impaired kidney function.
Overdosage
Little is known about the effects of cimetidine overdose, but victims may experience exaggerated side effects. Two deaths have occurred. Your local poison control center may advise giving ipecac syrup—available at any pharmacy—to induce vomiting and remove any drug remaining in the stomach. Victims who have definite symptoms should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Take cimetidine exactly as directed and follow your doctor’s instructions regarding diet and other treatment in order to get the maximum benefit from the drug.
Do not take the maximum dose continuously for more than 2 weeks without the consent and supervision of your doctor.
Cigarette smoking is associated with stomach ulcers and reduces cimetidine’s effectiveness.
Call your doctor at once if you develop any unusual side effects such as bleeding or bruisiiAg, tiredness, diarrhea, dizziness, rash, 131 NMbdinations. Black, tarry stools or vomiting material that resembles coffee grounds may indicate your ulcer is bleeding.
If you miss a dose of cimetidine, 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: Animal studies reveal no damage to the fetus, although cimetidine does pass into the fetal blood. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
Large amounts of cimetidine pass into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors may need less medication due to loss of kidney function and be more susceptible to side effects, especially confusion and other nervous system effects (see “Cautions and Warnings”).
Aug
1
Cilostazol
August 1, 2009 | Leave a Comment
Generic Name
Cilostazol (sil-oe-STAY-zol) Lq
Brand Name Pletal
Type of Drug Antiplatelet.
Prescribed For Intermittent claudication.
General Information
In intermittent claudication, leg muscles go into spasm due to reduced blood flow. This occurs when plaque buildup narrows blood vessels leading to the calf or other leg muscles. People with this condition often develop leg pain after walking only a short distance. Cilostazol prevents blood platelets from “clumping together” to begin the process of forming a blood clot, which can further obstruct arteries and worsen intermittent claudication. This drug is broken down in the liver.
Cautions and Warnings
Do not take this drug if you are allergic or sensitive to any of its ingredients.
?P,Ople with congestive heart failure (CHF) should not take cilostazol. Some studies indicate that long-term use of this drug may cause cardiovascular problems.
People with hemostatic disorders or active pathologic bleeding should not take cilostazil.
Drug Interactions
• Avoid mixing cilostazol with ketoconazole, itraconazole, fluconazole, miconazole, fluvoxamine, fluoxetine, nefazodone, or sertraline because this interaction may slow the breakdown of cilostazol, prolonging its effects. Cilostazol dosage is reduced by 50% when it is combined with any of these drugs.
• Aspirin can increase the anticoagulant (blood-thinning) effect of cilostazol, but this combination has not caused serious bleeding problems. There is no information on the effect of combining cilostazol and other antiplatelet or anticoagulant drugs. Cilostazol dosage is reduced by 50% when it is combined with any of these drugs.
• Diltiazem increases cilostazol blood levels by about 50%. Cilostazol dosage is reduced by 50% when it is combined with diltiazem.
• Erythromycin and similar antibiotics increase cilostazol blood levels. Take half the regular dose of cilostazol when combining it with any of these drugs.
• Combining cilostazol and omeprazole increases the effects of cilostazol. Cilostazol dosage is reduced by 50% when it is combined with omeprazole.
• Smoking reduces the Olectiveness of cilostazol by causing the liver to break it down faster.
Food Interactions
Take this drug on an empty stomach at least 30 minutes before or 2 hours after meals. Do not drink grapefruit juice at any time while
above. with dosage.
dache, infection, abdominal pain, ab- arrhea.
pitations, rapid heartbeat. dizziness, sea, sore throat, runny nose, back pain, arms or legs.
cough, fainting, and muscle aches. cts can occur in almost any part of the doctor if you experience any side ef- e.
Possible Side Effects
The risk of side effects
♦ Most common: headache
• stool, and diarrhea. • Common: heart palpitations
• stomach, nausea
• swelling in the
♦ Less common: gas,
♦ Rare: Rare side effects body. Contact your fect not listed taking cilostazol because it can interfere with the breakdown of the drug.
Usual Dose
Adult: 100 mg twice a day. 50 mg twice a day when combined with other drugs that may increase the effect of cilostazol. Child: not recommended.
Overdosage
Symptoms of overdose are likely to be the most common side effects. Overdose victims should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Several weeks of cilostazol treatment may be necessary before you notice any improvement in symptoms. Maximum benefit usually occurs after 12 weeks.
If you forget a dose, take it as soon as you remember. If it is almost time for your next dose, skip the forgotten dose and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Animal studies suggest that cilostazol may harm the fetus, but there is no information on the effect of cilostazol in pregnant women. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
cilostazol may pass into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors can take this drug without special precaution.
Aug
1
Ciclopirox
August 1, 2009 | Leave a Comment
Generic Name
Ciclopirox (sye-kloe-PERE-ox) &
Brand Names
Loprox Penlac
Type of Drug Antifungal,
Prescribed For
Fungus and yeast infections of the nails and skin, including athlete’s foot, candida, and dandruff.
General Information
Ciclopirox slows the growth of a variety of fungus organisms and yeasts and kills many others. The drug penetrates the skin, hair, hair follicles, and sweat glands. Ciclopirox nail lacquer is used for toenail and fingernail fungus infections. Ciclopirox shampoo is used for dandruff.
Cautions and Warnings
Do not use this product if you are allergic or sensitive to any of its ingredients.
Possible Side Effects
Common: burning, itching, stinging, or oozing at the application site.
Drug Interactions None known.
Usual Dose
Cream/Lotion
Adult and Child (age 10 and over): Massage into cleansed affected skin and surrounding area twice a day.
Nail Lacquer
Adult: Apply to infected nails once a day. Use in conjunction with monthly visits to a health care professional.
Child (under age 10): not recommended.
Shampoo
Adult: Wet hair and apply 1-2 tsp to the scalp. Lather and leave on hair and scalp for 3 minutes, then rinse. Avoid contact with eyes. Repeat twice weekly for 4 weeks.
Child (under age 16): not recommended.
Overdosage
Accidental ingestion may cause nausea and upset stomach. Call your local poison control center or hospital for more information. If you seek treatment, ALWAYS bring the prescription container.
Special Information
This product can be expected to relieve symptoms within the first week of use. Follow your doctor’s directions for the complete 2-4 week course of treatment with the cream or lotion to gain maximum benefit. The nail lacquer may be used for up to 48 weeks. Stopping the medication too soon can lead to a relapse.
When using ciclopirox nail lacquer, do not apply it to any skin other than that which surrounds the infected nails, because of possible irritation. Do not apply nail polish or any other nail lacquer to infected nails while you are using this product.
Avoid using ciclopirox nail lacquer near an open flame, since the product is flammable.
Do not cover cream or lotion with a bandage.
Call your doctor if the affected area burns, stings, or becomes red after you use this product, 13y i1 your symptoms do not clear Up aher 4 weeks of treatment; by then it is unlikely that this product will be effective.
If you forget a dose of ciclopirox, apply it as soon as you remember. Do not apply more than the amount prescribed to make up for the missed dose.
Special Populations
PregnancylBreast-feeding., ciclopirox may pass to the fetus in very small amounts. In animal studies, high doses of ciclopirox given by mouth did not harm the fetus. Caution should be exercised when using ciclopirox during pregnancy.
It is unknown if ciclopirox passes into breast milk. Nursing mothers who must use this drug should consider using infant formula.
Seniors: Seniors may use this drug without special restriction.
Aug
1
Cholestyramine
August 1, 2009 | Leave a Comment
Generic Name
Cholestyramine (kol-es-TYE-rah-meen) 0
Brand Names
LoCHOLEST Questran
LoCHOLEST Light Questran Light Prevalite
The information in this profile also applies to the following drugs:
Generic Ingredient: Colesevelam Hydrochloride WelChol
Generic Ingredient: Colestipol Hydrochloride Colestid
Type of Drug
Anti -hyperli pidemic (blood-fat reducer).
Prescribed For
High blood-cholesterol levels; generalized itching associated with bile duct obstruction—cholestyramine only; colitis; digitalis or thyroid overdose; and pesticide poisoning.
General Information
Cholestyramine resin lowers blood-cholesterol levels by absorbing bile acids in the bowel. Since the body uses cholesterol to make the bile acids—needed to digest fat—fat digestion can only continue by making more bile acid from blood cholesterol. This results in lower blood-cholesterol levels 4-7 days after starting cholestyramine.
Cholestyramine w3Cks entirely Within the bowel and is never absorbed into the bloodstream. Though usually given 3-4 times a day, there appears to be no advantage to taking it more often than twice a day. The cholesterol-lowering effect of cholestyramine may be increased when it is taken with an HMG-CoA inhibitor or nicotinic acid. In some kinds of hyperlipidemia, colestipol may be more effective in lowering total blood cholesterol than clofibrate.
Cautions and Warnings
Do not use cholestyramine if you are allergic or sensitive to any of its ingredients or if your bile duct is blocked. The powder form should not be taken dry; doing so may result in the inhalation of powder into your lungs or a clogged esophagus.
If you are being treated for hypothyroidism, diabetes, kidney or blood vessel disorder, obstructive liver disease, or alcholism, consult your doctor before taking cholestyramine.
Cholestyramine may cause or worsen constipation and hemorrhoids. Most constipation is mild, but some people may need to stop the medication or take less of it.
Possible Side Effects
✓ Most common: constipation, which may be severe and in rare cases result in bowel impaction. Hemorrhoids may be worsened.
♦ Less common: abdominal pain and bloating, and bleeding disorders or black-and-blue marks due to interference with the absorption of vitamin K, a necessary factor in the blood clotting process. One person developed night-blindness because the medication interfered with vitamin A absorption into the blood. Other side effects include belching, gas, nausea, vomiting, diarrhea, heartburn, and appetite loss. Your stool may have an unusual appearance because of a high fat level.
✓ Rare: Rare side effects can affect your mouth, stomach and intestines, muscles and joints, mental status, urinary tract, and breathing. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
O Cholestyramine interferes with the absorption of virtually all oral drugs, including acetaminophen, amiodarone, aspirin, cephalexin, chenodiol, clindamycin, clofibrate, contraceptive drugs, corticosteroids, diclofenac, iopanoic acid, iron, digitalis drugs, furosemide, gemfibrozil, glipizide, hydrocortisone, imipramine (an antidepressant), methyldopa, mycophenolate, nicotinic acid, penicillin, phenobarbital, phenytoin, piroxicam, propranolol, tetracycline, thiazide diuretics, thyroid drugs, tolbutamide, trimethoprim, ursodiol, warfarin and other anticoagulant (blood-thinning) drugs, and vitamins A, D, E, and K. Take other medications at least 1 hour before or 4-6 hours after taking cholestyramine.
Food Interactions
Take this medication before meals. The powder may be mixed with soda, water, juice, cereal, or pulpy fruits, such as applesauce or crushed pineapple. Cholestyramine bars should be thoroughly chewed and taken with plenty of fluids. Colestipol pills are swallowed whole.
Usual Dose
Cholestyramine: 4 g (1 packet) or 1 level scoopful taken 1-2 times a day or up to 6 times a day.
Colesevelam: 6 tablets once a day or in 2 divided doses. Colestipol: 2-16 g (1-6 packets) once a day or in divided doses.
Overdosage
The most severe effect of overdose is obstruction of the gastrointestinal tract. Take the overdose victim to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Do not swallow the granules or powder in their dry form. Prepare each packet of powder by mixing it with soup, cereal, or pulpy fruit or by adding the powder to a 6-oz. glass of liquid, such as a carbonated beverage. If some of the drug sticks to the sides of the glass, rinse it with liquid and drink the remainder.
Constipation, gas, nausea, and heartburn may occur and then disappear with continued use of this medication. If constipation is a problem, your doctor may recommend drinking more fluids and taking a fiber supplement. Call your doctor if these side effects persist or if you develop unusual problems such as bleeding from the gums or rectum.
If you miss a dose of cholestyramine, skip it and continue with your regular scheduke. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: While cholestyramine does not affect the fetus directly, it may prevent the absorption of vitamins A, D, and E and other nutrients essential to the fetus’ proper development–even when you take, a prenatal vitamin supplement.
When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
Cholestyramine is not absorbed into the body. However, reduced absorption of vitamins A, D, and E and other nutrients may make your milk less nutritious. Nursing mothers who must take cholestyramine should use infant formula.
Seniors: Seniors are more likely to experience side effects, especially those relating to the bowel.
Aug
1
Chlorzoxazone
August 1, 2009 | Leave a Comment
Generic Name
Chlorzoxazone (klor-M-uh-zone)
Brand Names
Parafon Forte DSC Strifon Forte DSC
Type of Drug
Skeletal muscle relaxant.
Prescribed For
Pain and spasm of muscular conditions, including strain, sprain, bruising, and lower back problems.
General Information
Chlorzoxazone works primarily on the spinal cord level and on the brain, acting as a mild sedative. This results in fewer spasms, less pain, and greater mobility. Chlorzoxazone provides only temporary relief and is not a substitute for other types of therapy, such as rest, surgery, and physical therapy.
Cautions and Warnings
Do not take chlorzoxazone if you are allergic or sensitive to any of its ingredients, or if you have a condition known as porphyria.
People with poor liver or kidney function should take this drug with caution because serious liver toxicity has rarely occurred in people using chlorzoxazone.
Chlorzoxazone may interact with other drugs that cause nervous system depression (see “Drug Interactions”).
Because it is possible to become dependent on this drug, people with a history of substance abuse should take chlorzoxazone with caution.
Possible Side Effects
♦ Most common: dizziness, drowsiness, lightheadedness, malaise, and aveTStimulation,
♦ Less common: headache, stomach cramps or pain, diar-
rhea, constipation, heartburn, nausea, and vomiting.
• Rare: internal bleeding, liver problems, severe allergic-type skin reactions, and breathing problems. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
• The depressive effects of chlorzoxazone may be enhanced by taking it with alcohol, sedatives, sleeping pills, or other nervous system depressants. Avoid these combinations.
Food Interactions
Take this drug with food if it upsets your stomach. The tablets may be crushed and mixed with food.
Usual Dose
Adult: 250-750 mg 3-4 times a day. Child: 125-500 mg 3-4 times a day.
Do not take more medication than is prescribed.
Overdosage
Early signs of chlorzoxazone overdose may include nausea, vomiting, diarrhea, drowsiness, dizziness, lightheadedness, and headache. Victims may also feel sluggish or sickly and lose the ability to move their muscles. Breathing may become slow or irregular, and blood pressure may drop. Contact a doctor immediately or go to a hospital emergency room for treatment. ALWAYS bring the prescription bottle or container.
Special Information
Chlorzoxazone may make you drowsy or reduce your ability to concentrate. Be extremely careful while driving or operating hazardous equipment. Avoid alcoholic beverages.
Chlorzoxazone may turn your urine orange to purple-red; this is not dangerous.
Call your doctor if you develop drowsiness, weakness, an allergic reaction, skin rash or itching, breathing difficulties, black or tarry stools, vomiting of material that resembles coffee grounds, liver problems, or any other severe or bothersome side effect.
4f you miss a dose of chlorzoxazone by more than an hour, skip the dose you forgot and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: The safety of chlorzoxazone in pregnant women has not been established. Pregnant women should only take chlorzoxazone after carefully weighing its potential benefits against its risks.
It is not known if chlorzoxazone passes into breast milk. Nursing mothers should consider using infant formula.
Seniors: Seniors, especially those with severe liver disease, are more sensitive to the effects of chlorzoxazone.
Aug
1
Chlorpromazine
August 1, 2009 | Leave a Comment
Generic Name
Chlorpromazine (klor-PROE-muh-zene) Al
Brand Names
Sonazine Thorazine*
The information in this profile also applies to the following drugs: Generic Ingredient: Fluphenazine Hydrochloride RE Generic Ingredient: Thioridazine Hydrochloride 0 Generic Ingredient: Trifluoperazine Hydrochloride
‘Some products in this brand-name group are alcohol- or sugar-free. Consult your pharmacist.
Type of Drug Phenothiazine antipsychotic.
Prescribed For
Psychotic disorders; moderate to severe depression with anxiety; agitation or aggressiveness in disturbed children; intractable pain; and senility. May also be used to relieve nausea, vomiting, hiccups, restlessness, acute intermittant porphyria, and apprehension before surgery or other procedures.
General Information
Chlorpromazine and other phenothiazines act upon a portion of the brain called the hypothalamus. Phenothiazines affect parts of the hypothalamus that control metabolism, body temperature, alertness, muscle tone, hormone balance, and vomiting. Chlorpromazine is available in suppositories and as liquid for those who have trouble swallowing tablets.
Cautions and Warnings
Do not take chlorpromazine if you are AeTgic or sensitive to any oVilsingredients or to any phenothiazine drug. Do not take it if you have very low blood pressure, Parkinson’s disease, or blood, liver, kidney, or heart disease.
Chlorpromazine may depress the cough reflex. People have accidentally choked to death because the cough reflex failed to protect them. Because of its effect in reducing vomiting, chlorpro-mazine may obscure symptoms of disease or toxicity due to over-
dose of another drug.
Use chlorpromazine under your doctor’s strict supervision if you have glaucoma, epilepsy, ulcers, or urinary difficulties.
Avoid exposure to extreme heat, because this drug may upset your body’s temperature-control mechanism. Do not allow the liquid forms of this drug to come in contact with your skin because they are highly irritating.
Chlorpromazine may cause unusually high or low levels of cholesterol.
Possible Side Effects
♦ Most common: drowsiness, especially during the first or second week of therapy. If drowsiness becomes troublesome, contact your doctor.
V Less common: changes in blood components, including anemias, raised or lowered blood pressure, abnormal heart rate, heart attack, sensitivity to light, and faintness or dizziness.
V 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.
Jaundice (symptoms include yellowing of the whites of the eyes or skin) may appear; when it does, it is usually within the first 2-4 weeks of treatment. Normally the jaundice goes away when the drug is discontinued, but there have been cases when it has not.
Phenothiazines may produce extrapyramidal side effects, including spasm of the neck muscles, rolling back of the eyes, convulsions, difficulty swallowing, and symptoms associated with Parkinson’s disease. These side effects seem very serious but usually disappear after the drug has been withdrawn; however, symptoms affecting the face, tongue, or jaw may persist for as long as several years, especially in older adults with a history of brain damage.
Chlorpromazine may cause an unusual increase in psychotic symptoms or may cause paranoid reactions, tiredness, lethargy, restlessness, hyperactivity, confusion at night, bizarre dreams, sleeplessness, depression, decreased sex drive, increased appetite, or euphoria (feeling “high”).
Drug Interactions
• Be cautious about taking chlorpromazine with over-the-
counter cough, cold, or allergy medications, barbiturates, al-
cohol, sleeping pills, narcotics or other sedatives, or any other
drug that may produce a depressive effect.
• Aluminum antacids may reduce the effectiveness of phenothiazine drugs.
• Chlorpromazine may reduce the effectiveness of bromocriptine and appetite suppressants.
• Anticholinergic drugs may reduce the effectiveness of chlorpromazine and increase the chance of side effects.
• Phenothiazine drugs may counter the blood-pressurelowering effect of guanethidine.
• Taking lithium together with a phenothiazine drug may lead to disorientation, loss of consciousness, or uncontrolled muscle movements.
• Combining propranolol and a phenothiazine drug may lead to unusually low blood pressure.
• Combining tricyclic antidepressants with a phenothiazine drug can lead to antidepressant side effects.
• Chlorpromazine may reduce the effectiveness of epinephrine and norepinephrine.
• Cigarette smoking reduces the amount of chlorpromazine in your blood. Smokers may need larger doses.
Food Interactions
Take liquid chlorpromazine with fruit juice or other liquids. You may also take it with food if it upsets your stomach.
Usual Dose
Adult: 30-1000 mg or more a day, individualized according to your disease and response.
Child (age 6 months and over): 0.25 mg per lb. of body weight every 4-6 hours, up to 200 mg or more a day, depending on disease, age, and response.
Chitty (under 6 months): not recommended.
Overdosage
Overdose symptoms include depression, extreme weakness, tiredness, lowered blood pressure, agitation, restlessness, uncontrolled muscle spasms, convulsions, fever, dry mouth, abnormal heart rhythms, and coma. The victim should be taken to a hospital emergency room immediately. ALWAYS bring the prescription bottle or
container.
Special Information
Call your doctor at once if you develop sore throat, fever, rash, weakness, visual problems, tremors, muscle movements or twitching, yellowing of the skin or whites of the eyes, or darkening of the urine.
Do not stop taking chlorpromazine without your doctor’s knowledge. It may take several weeks before this drug takes effect.
This drug may cause drowsiness. Use caution when driving or operating hazardous equipment. Avoid alcoholic beverages.
Chlorpromazine may cause unusual sensitivity to the sun and may turn your urine reddish brown to pink.
If dizziness occurs, avoid rising quickly from a sitting or lying position and avoid climbing stairs. Use caution in hot weather, because this drug may make you more prone to heat stroke.
If you are using sustained-release capsules, do not chew them or break them—swallow them whole. Liquid forms of phenothiazines must be protected from light. Do not take them out of their opaque bottles.
If you take chlorpromazine more than once a day and forget to take a dose, take it right away if you remember within an hour. If you do not remember within an hour, skip the dose you forgot and continue with your regular schedule. If you take 1 dose a day and forget a dose, skip the dose you forgot and continue your regular schedule the next day. Never take a double dose.
Special Populations
Pregnancy/Breast-feeding: Infants born to women taking this drug have experienced side effects—including jaundice and nervous system effects. Check with your doctor about taking chlorpromazine if you are or might be pregnant.
This drug may pass i”W breast milk. Nursing mothers who must take chlorpromazine should use infant formula .
Seniors: Seniors are more sensitive to the effects of this drug and usually achieve desired results with lower dosages. Some experts feel that seniors should receive ‘/,-1/4 the usual adult dose.
Jul
16
Alprazolam
July 16, 2009 | Leave a Comment
Generic Name
Alprazolam (al-PRAY-zoe-lam) CGI
Brand Names
Niravam Xanax Xanax XR Type of Drug
Benzodiazepine sedative.
Prescribed For
Generalized anxiety disorder and anxiety associated with depression; panic disorder with or without agoraphobia.
General Information
Alprazolam is a member of a group :)f drugs known as benzodiazepines. Benzodiazepines directly affect the brain. They can relax you and make you more tranquil or sleepier, or they can slow nervous system transmissions in such a way as to act as an anticonvulsant. Many doctors prefer benzodiazepines to other drugs that can be used to similar effect because they tend to be safer, have fewer side effects, and are usually as effective, if not more so.
Cautions and Warnings
Do not take alprazolam if you know you are allergic or sensitive to it or to another benzodiazepine drug, including clonazepam.
Alprazolam can aggravate narrow-angle glaucoma, but you may take it if you have open-angle glaucoma and are receiving therapy for it.
Other conditions where alprazolam should be avoided are: severe lung disease, sleep apnea (intermittent cessation of breathing during sleep), liver disease, drunkenness, and kidney disease. In each of these conditions, the depressive effects of alprazolam may be enhanced or could be detrimental to your overall condition.
Alprazolam should not be taken by psychotic patients because it is not effective for them and can trigger unusual excitement, stimulation, and rage.
Alprazolam is meant to be used for no more than 3-4 months in a row. Your condition should be reassessed before continuing your medicine beyond that time.
Alprazolam may be addictive. When used to treat panic disorder, alprazolam is frequently prescribed in doses exceeding 4 mg a day. Studies show that these higher doses may cause physical and emotional dependence, making it very difficult to stop taking the drug. Drug withdrawal may develop if you stop taking it after only 4 weeks of regular use but is more likely after longer use and at higher doses. It may start with anxiety and progress to tingling in the hands or feet, sensitivity 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. Severe withdrawal symptoms may include seizures.
Your dosage should be reduced gradually (0.5 mg decrease every 3 days) to prevent drug withdrawal symptoms.
Possible Side Effects
V 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.
V Less common: depression, lethargy, disorientation, headache, inactivity, slurred speech, stupor, dizziness, tremors, constipation, dry mouth, nausea, inabilityto control urination, Possible Side Effects (continued)
sexual difficulties, irregular menstrual cycle, changes in heart rhythm, low blood pressure, fluid retention, blurred or double vision, itching, rash, hiccups, nervousness, inability to fall asleep, and occasional liver dysfunction. If you experience any of these symptoms, stop taking the medicine and contact your doctor immediately.
V Rare: withdrawal seizures. 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
• Alprazolam is a central-nervous-system depressant. Avoid alcohol, other sedatives, narcotics, barbiturates, monoamine oxidase inhibitor (MAGI) antidepressants, antihistamines, and antidepressants. Taking alprazolam with these drugs may result in excessive depression, tiredness, sleepiness, breathing difficulties, or related symptoms.
• Smoking may reduce the amount of alprazolam in your blood by 50%. Smokers may need larger doses.
• The effects of alprazolam may be prolonged when taken together with cimetidine, contraceptive drugs, disulfiram, fluoxetine, isoniazid, itraconazole, ketoconazole, metoprolol, probenecid, propoxyphene, propranolol, and valproic acid.
• The effects of some benzodiazepines may be decreased by rifampin.
• Theophyllines may reduce alprazolam’s sedative effects.
• If you take antacids, separate them from your alprazolam dose by at least 1 hour to prevent them from interfering with the absorption of alprazolam into the bloodstream.
• Alprazolam may raise digoxin blood levels and the chances of digoxin toxicity.
• The effect of levodopa + carbidopa may be decreased if it is taken together with alprazolam.
• Combining alprazolam with phenytoin may increase phenytoin blood concentrations and the chances of phenytoin toxicity.
Food Interactions
Alprazolam is best taken on an empty stomach but may be taken with food if it upsets your stomach.
Usual Dose
Anxiety Disorder
Adult: 0.25-0.5 mg 3 times a day. Dosage must be tailored to your individual needs with a maximum dose of 4 mg a day. Child (under age 18): not recommended.
Panic Disorder
Adult: 1 -10 mg a day.
Child (under age 18): not recommended.
Overdosage
Symptoms of overdose are confusion, sleepiness, poor coordination, lack of response to pain such as a pinprick, 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.
Special Information
Alprazolam can cause tiredness, drowsiness, inability to concentrate, or related symptoms. Be careful if you are driving, operating machinery, or performing other activities that require concentration.
Anyone taking alprazolam for more than 3 or 4 months at a time may have a drug withdrawal reaction if the medicine is stopped suddenly (see “Cautions and Warnings”). Do not stop taking alprazolam, or increase or decrease the dosage, without first consulting your doctor.
If you forget a dose of alprazolam, take it as soon as you remember. If it is almost time for your next dose, skip the dose you forgot and return to your regular schedule. Do not take a double dose. If you take Xanax XR, take your full daily dose once a day in the morning. Do not chew or crush Xanax XR tablets.
Special Populations
Pregnancy/Breast-feeding: Alprazolam may cause birth defects if taken during the first 3 months of pregnancy. You should avoid alprazolam while pregnant.
Alprazolam may pass into breast milk. Nursing mothers who must take alprazolam should use infant formula.
Seniors: Seniors, especially those with liver or kidney disease, are more sensitive to the effects of alprazolam and generally require smaller doses to achieve the same effect.
Jul
16
Alitretinoin
July 16, 2009 | Leave a Comment
Generic Name
Alitretinoin (al-ih-TRET-in-oin)
Brand Name
Panretin
Type of Drug Retinoid.
Prescribed For
Skin lesions of Kaposi’s sarcoma (KS).
General Information
Alitretinoin binds to and activates retinoid receptors in human cells. Once activated, these receptors help stimulate the body’s natural mechanisms for limiting tissue growth—in this case, the growth of KS cells. KS lesions, which are primarily associated with human immunodeficiency virus (HIV), can respond to alitretinoin in as little as 2 weeks, but most people do not start to see results for 48 weeks or, in some cases, 14 weeks or more.
Cautions and Warnings
Do not use alitretinoin if you are allergic or sensitive to retinoids or to any of its ingredients.
Alitretinoin is applied to individual KS lesions. It does not treat systemic KS or prevent new KS lesions from forming.
People requiring systemic KS treatment (those who have developed more than 10 new KS lesions within a month) should not use alitretinoin.
People with swollen lymph glands, KS that affects the lungs or other major organ involvement should not use alitretinoin.
Possible Side Effects .
✓ Most common: rash and burning pain at application site.
♦ Common: itchy, flaking, peeling, cracking, oozing, swelling, and inflammation at application site.
Drug Interactions
• Do not use insect repellant products that contain DEET, a widely used chemical repellant. Alitretinoin increases DEET toxicity.
Usual Dose
Adult: Apply 2-4 times a day to KS skin lesions. Seniors should use this drug with caution.
Child: not recommended.
Overdosage
Little is known about the effects of accidental ingestion. Call your local poison control center or a hospital emergency room for information. If you seek treatment, ALWAYS bring the prescription bottle or container.
Special Information
Apply enough alitretinoin gel to cover the entire skin lesion. Allow the gel to dry for 3-5 minutes before covering the area with clothing. Avoid showering, bathing, or swimming for at least 3 hours.
If you use a bandage or dressing, be sure it is not tight and that air can circulate freely over the area.
Avoid applying alitretinoin to unaffected skin because it may be irritated by the drug. Avoid applying near the nose, eyes, or mouth.
Alitretinoin contains alcohol. Always keep it away from any open flame.
Retinoids can cause unusual sensitivity to the sun. While this has not been seen with alitretinoin, you should avoid prolonged exposure to the sun or use sunscreen while taking this drug.
If you forget a dose, apply it as soon as you remember. If it is almost time for your next dose, apply the forgotten dose and then space the rest of your doses throughout the day. Continue with your regular schedule the next day.
Special Populations
PregnancylBreast-feeding., Alitretinoin can harm the fetus when sufficient levels of the drug are present in the mother’s bloodstream, but it is not known if these levels are achieved during routine use of alitretinoin. Women who are or might be pregnant should only use this drug after discussing its potential benefits and risks with their doctors.
It is not known if alitretinoin passes into breast milk. Nursing mothers who must use alitretinoin should use infant formula.
Seniors: There is no information on use of alitretinoin by seniors. Seniors should use it with caution.
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Aliskiren
July 16, 2009 | Leave a Comment
Generic Name
Aliskiren (ah-LISS-kih-ren)
Brand Name Tekturna
Combination Product
Generic Ingredients: Aliskiren + Hydrochlorothiazide Tekturna HCT
Type of Drug
Direct renin inhibitor. Prescribed For
High blood pressure.
General Information
Renin is produced by the kidney in response to a reduction in blood volume and the amount of blood passing through the kidney. Once in the blood, renin reacts with other hormones to forma very powerful blood vessel constrictor called angiotensin E that directly raises blood pressure. Renin also works with a hormore called aldosterone to raise blood pressure and it prevents sodium from being eliminated from the body. This increases the amount of water in the system, raising blood volume and increasing blood pressure. Aliskiren inhibits renin and all of its actions, thereby !owering blood pressure. The blood pressure lowering is usually seen with 2 weeks of starting on treatment. When aliskiren treatment is stopped, blood pressure gradually rises to pre-treatment levels. Only about 21/2% of any dose is absorbed into the blood and it takes about a week to reach a steady level in the blood. Most of the drug that is absorbed is broken down in the liver. The rest passes out of the body unchanged in the urine. Aliskiren may be used alone or with other hypertensives, however its use with maximum doses of an ACE inhibitor has not been adequately studied.
Cautions and Warnings
Do not take aliskiren if you are allergic or sensitive to any of its ingredients.
Angioedema swelling of the face, hands or feet, tongue, or throat can occur at any time during aliskiren treatment. If this happens, stop taking the medicine and go to your doctor’s office or a hospital emergency room for treatment. This reaction can interfere with your breathing.
The safety of aliskiren in people with moderate to severe kidney disease is not known.
The combination of aliskiren and an ACE inhibitor can lead to high blood levels of potassium.
Aliskiren may be less effective in some black patients with high blood pressure, especially when dietary salt intake is high. Nevertheless, it should still be considered a useful blood pressure treatment.
Possible Side Effects
✓ Common: nausea, dizziness, and sleeplessness.
✓ Less common: diarrhea, abdominal pain, upset stomach, GERD, cough, rash high blood uric acid levels, gout, kidney stones, headache, nose and throat irritation, fatigue, upper respiratory infection, and back pain.
✓ Rare: difficulty breathing; swelling of the hands, face, eyes, or whole body; and seizures. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
• Mixing aliskiren with irbesartan can reduce the amount of aliskiren into the blood by 50%. This may reduce the effectiveness of aliskiren.
• Aliskiren has been studied together with both hydrochlorothiazide and valsartan and can be combined with them in blood pressure management. It has been used with amlodipine but may not be better than high dose amlodipine alone.
• Aliskiren’s interaction with ACE inhibitors is not yet fully known.
• Atorvastatin and ketoconazole slow the breakdown of aliskiren, resulting in an increase of aliskiren blood levels by 50% or more. Dosage adjustment may be necessary.
Aliskiren can reduce blood levels of the diuretic furosemide, reducing the diuretic’s effect.
Food Interactions
Aliskiren can be taken without regard to food or meals. Avoid taking it with high fat meals because they can drastically reduce the amount of aliskiren absorbed into the blood.
Usual Dose
Adult (age 18 and over)
Tekturna: 50-300 mg at the same time every day. Tekturna HCT. 1 tablet a day.
Child: not recommended. Overdosage
The most likely symptom of overdose is low blood pressure (symptoms include dizziness and fainting). If you think you have taken an overdose, call your doctor or go to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Call your doctor at once if you develop swelling of the face, eyes, lips, tongue, or throat; difficulty swallowing or breathing; hoarseness; or other signs of a drug reaction or allergy.
If you forget a dose, take it as soon as you remember. If you do not remember until 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: Aliskiren can injure or kill a developing fetus. Pregnant women should not take aliskiren. Women who suspect they are pregnant must call their doctor at once and stop taking aliskiren when pregnancy is confirmed. In those rare cases where aliskiren is considered life-saving for the mother and there is no substitute for aliskiren, your doctor may advise that you continue on the medicine and then check your baby’s development with periodic ultrasound examinations.
It is not known if this drug passes into breast milk. Nursing mothers should use infant formula.
Seniors: Seniors may have higher blood levels of aliskiren and be more susceptible to drug side effects, but starting dose adjustment is not required.