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nevirapine - oral, Viramune (cont.)

DRUG INTERACTIONS: The effects of some drugs can change if you take other drugs or herbal products at the same time. This can increase your risk for serious side effects or may cause your medications not to work correctly. These drug interactions are possible, but do not always occur. Your doctor or pharmacist can often prevent or manage interactions by changing how you use your medications or by close monitoring.To help your doctor and pharmacist give you the best care, be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products) before starting treatment with this product. While using this product, do not start, stop, or change the dosage of any other medicines you are using without your doctor's approval.Some products that may interact with this drug include: rifabutin, warfarin.Other medications can affect the removal of nevirapine from your body, which may affect how nevirapine works. Examples include azole antifungals (such as fluconazole), rifamycins (such as rifampin), St. John's wort, among others.Nevirapine can speed up the removal of many other medications from your body, which may affect how they work. Examples of affected drugs include antiarrhythmics (such as amiodarone), some drugs used to treat seizures (such as carbamazepine, clonazepam), ketoconazole, macrolide antibiotics (such as clarithromycin), methadone, among others.Some other drugs to treat HIV infection (including protease inhibitors such as atazanavir, lopinavir/ritonavir) may also interact with nevirapine. Your doctor will adjust your medications and monitor your treatment to reduce the risk of side effects.Do not use prednisone to prevent a rash because it can actually increase the risk of a rash during the first 6 weeks of nevirapine treatment. Ask your doctor for more details.This medication may decrease the effectiveness of hormonal birth control products (such as pills, patch, ring). This effect can result in pregnancy. Ask your doctor or pharmacist for details. Discuss whether you should use additional reliable birth control methods while taking this medication.This document does not contain all possible drug interactions. Keep a list of all the products you use. Share this list with your doctor and pharmacist to lessen your risk for serious medication problems.



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