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PRECAUTIONS: Before using interferon, tell your doctor or pharmacist if you are allergic to it; or to natural rubber (latex); or if you have any other allergies.Before using this medication, tell your doctor or pharmacist your medical history, especially of: mental/mood disorders (e.g., depression, psychosis, suicidal thoughts), heart disease (e.g., angina, congestive heart failure, arrhythmia), seizures, thyroid disease, liver disease, decreased bone marrow function.Limit your intake of alcohol while on this medication. Ask your doctor or pharmacist about the safe use of alcohol while using this drug.This medication is not recommended for use during pregnancy. Consult your doctor for more details.It is not known whether this drug passes into breast milk. Breast feeding is not recommended while using this drug. Consult your doctor before breast-feeding.

DRUG 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: hydroxyurea, telbivudine, theophylline, other drugs/herbals which may be harmful to your liver (e.g., isoniazid, kava, methotrexate, nefazodone).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.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.