Erlotinib Oral

Erlotinib Oral Interactions

Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of:

• "blood thinners" (e.g., warfarin)
• drugs affecting liver enzymes that remove erlotinib from your body (such as azole antifungals, including itraconazole; macrolide antibiotics, including erythromycin; cimetidine; rifamycins, including rifabutin; St. John's wort; certain anti-seizure medicines, including carbamazepine; HIV protease inhibitors, including ritonavir)

Check all prescription and nonprescription medicine labels carefully since many contain pain relievers/fever reducers (nonsteroidal anti-inflammatory drugs-NSAIDs such as aspirin, celecoxib, ibuprofen, naproxen) which may increase your risk for stomach bleeding while you are taking erlotinib. Ask your pharmacist about the safe use of these products. Low-dose aspirin, as prescribed by your doctor for specific medical reasons such as heart attack or stroke prevention (usually these dosages are 81-325 milligrams per day), should be continued. Consult your doctor or pharmacist for more details.

Cigarette smoking decreases blood levels of this medication. If you currently smoke, stop smoking while taking this medication. Consult your doctor or pharmacist for details.

See also the How to Use section.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

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