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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: drugs that decrease the amount of acid in your stomach (for example, ulcer drugs/heartburn relievers such as H2 blockers including cimetidine/famotidine, proton pump inhibitors such as omeprazole/lansoprazole).

Other medications can affect the removal of delavirdine from your body, which may affect how delavirdine works. Examples include some drugs used to treat seizures (such as carbamazepine, phenobarbital, phenytoin), macrolide antibiotics (such as clarithromycin), rifamycins (such as rifabutin, rifampin), St. John's wort, among others.

Delavirdine can slow down the removal of many other medications from your body, which may affect how they work. Examples of affected drugs include antiarrhythmics (such as quinidine), cisapride, some drugs for anxiety/sleep (such as alprazolam, midazolam, triazolam), drugs to treat erectile dysfunction (such as sildenafil), ergot drugs (such as ergotamine), pimozide, cholesterol-reducing statins (such as atorvastatin, fluvastatin, lovastatin, simvastatin), trazodone, warfarin, among others.

Some other drugs to treat HIV infection (including protease inhibitors such as indinavir, ritonavir) may also interact with delavirdine. Your doctor will adjust your medications and monitor your treatment to reduce the risk of side effects.

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.

OVERDOSE: If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center.

NOTES: Do not share this medication with others.

Laboratory and/or medical tests (such as liver tests, viral load, T-cell counts) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.

Keep all medical and laboratory appointments.

MISSED DOSE: If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

STORAGE: Store at room temperature between 59-86 degrees F (15-30 degrees C) away from light and moisture. Keep the container cap tightly closed. Do not store in the bathroom. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.

MEDICAL ALERT: Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (US) or 1-800-668-1507 (Canada).

Information last revised May 2010 Copyright(c) 2010 First DataBank, Inc.