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|Norvir |
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In Canada—
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DescriptionRitonavir (rit-ON-uh-veer) is used, alone or in combination with other medicines, in the treatment of the infection caused by the human immunodeficiency virus (HIV). HIV is the virus that causes acquired immune deficiency syndrome (AIDS). Ritonavir will not cure or prevent HIV infection or AIDS; however, it helps keep HIV from reproducing and appears to slow down the destruction of the immune system. This may help delay the development of problems usually related to AIDS or HIV disease. Ritonavir will not keep you from spreading HIV to other people. People who receive this medicine may continue to have other problems usually related to AIDS or HIV disease. This medicine is available only with your doctor"s prescription, in the following dosage forms:
Before Using This MedicineIn deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For ritonavir, the following should be considered: Allergies—Tell your doctor if you have ever had any unusual or allergic reaction to ritonavir. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes. Pregnancy—Studies have not been done in humans. However, in animal studies, ritonavir has been found to cause reduced weight and delayed growth in the infants. Ritonavir did not cause birth defects in animal studies. Before taking this medicine, make sure your doctor knows if you are pregnant or if you may become pregnant. Breast-feeding—It is not known whether ritonavir passes into breast milk. However, breast-feeding is usually not recommended in AIDS patients because of the risk of passing the AIDS virus on to the infant. Children—This medicine has been tested in a limited number of children older than 1 month of age. In effective doses, the medicine has not been shown to cause different side effects or problems than it does in adults. Older adults—Many medicines have not been studied specifically in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults. There is no specific information comparing use of ritonavir in the elderly with use in other age groups. Other medicines—Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your health care professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine. When taking ritonavir, it is especially important that your health care professional know if you are taking any of the following:
Other medical problems—The presence of other medical problems may affect the use of ritonavir. Make sure you tell your doctor if you have any other medical problems, especially:
Proper Use of This MedicineIt is important that ritonavir be taken with food . For patients taking the solution (liquid) form of this medicine:
Take this medicine exactly as directed by your doctor . Do not take it more often, and do not take it for a longer time than your doctor ordered. Also, do not stop taking this medicine without checking with your doctor first. Keep taking ritonavir for the full time of treatment , even if you begin to feel better. This medicine works best when there is a constant amount in the blood. To help keep the amount constant, do not miss any doses. Also, it is best to take the doses at evenly spaced times, day and night . For example, if you are to take two doses a day, the doses should be spaced about 12 hours apart. If you need help in planning the best times to take your medicine, check with your health care professional. Only take medicine that your doctor has prescribed specially for you. Do not share your medicine with others. Dosing—The dose of ritonavir will be different for different patients. Follow your doctor"s orders or the directions on the label . The following information includes only the average doses of ritonavir. If your dose is different, do not change it unless your doctor tells you to do so.
Missed dose—If you miss a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Storage—To store this medicine:
Precautions While Using This MedicineDo not take any other medicines without checking with your doctor first . To do so may increase the chance of side effects from ritonavir or the other medicines. It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and check for unwanted effects, especially increases in blood sugar. This medicine may decrease the effects of some oral contraceptives (birth control pills). To avoid unwanted pregnancy, it is a good idea to use some additional contraceptive measures while being treated with ritonavir . Side Effects of This MedicineAlong with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor as soon as possible if any of the following side effects occur: Less common Fainting; feeling faint, dizzy, or light-headedness; feeling of warmth or heat; flushing or redness of skin especially on face and neck; headache; sweating Rare Confusion; dehydration; dry or itchy skin; fatigue; fruity mouth odor; increased hunger; increased thirst; increased urination; nausea; vomiting; weight loss Not known Bloating; chills; constipation; convulsions; cough; darkened urine; decreased urination; difficulty breathing; dry mouth; fast heartbeat; fever; hives or welts; increase in heart rate; indigestion; itching; large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, sex organs; loss of appetite; loss of bladder control; muscle spasm or jerking of all extremities; noisy breathing; pains in stomach, side, or abdomen, possibly radiating to the back; rapid breathing; redness of skin; shortness of breath; skin rash; sudden loss of consciousness; sunken eyes; thirst; tightness in chest; unusual tiredness or weakness; wheezing; wrinkled skin; yellow eyes or skin Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome: More common Abdominal pain; acid or sour stomach; belching; burning, crawling, itching, numbness, prickling, pins and needles, or tingling feelings; change in sense of taste; diarrhea; dizziness; heartburn; sleepiness or unusual drowsiness; sleeplessness; trouble sleeping; unable to sleep; weakness Less common Bloated, full feeling; body aches or pain; congestion; delusions; dementia; difficulty in moving; discouragement; dryness or soreness of throat; excess air or gas in stomach or intestines; fear; feeling sad or empty; general feeling of discomfort or illness; hoarseness; increased urge to urinate during the night; irritability; lack of appetite; loss of interest or pleasure; mood or mental changes; muscle aching or cramping; muscle pain or stiffness; nervousness; pain in joints or in unspecified location; passing gas; runny nose; swollen joints; tender, swollen glands in neck; throat irritation; tiredness; trouble concentrating; trouble in swallowing; voice changes; waking to urinate at night Not known Increased fat deposits on face, neck, and trunk Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor. Developed: 01/27/1997 The information contained in the Thomson Healthcare (Micromedex) products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you. The use of the Thomson Healthcare products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Thomson Healthcare and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, THOMSON HEALTHCARE MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Thomson Healthcare does not assume any responsibility or risk for your use of the Thomson Healthcare products. Where can I get more information about Norvir ? 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