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PRECAUTIONS: Before taking anastrozole, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, high blood pressure, heart disease (such as ischemic heart disease, history of chest pain), brittle bone disease (osteoporosis), blood clots.This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Anastrozole is used mainly in women after menopause. If you have not gone through menopause and your doctor has prescribed this for you, this medication must not be used during pregnancy. It may cause harm to an unborn baby or miscarriage. If you become pregnant or think you may be pregnant, tell your doctor immediately. Women of childbearing age should use reliable form(s) of contraception (such as latex condoms) during treatment. Products containing estrogen (such as birth control pills) should not be used. Consult your doctor for more details.It is not known whether this drug passes into breast milk. Because of the potential risk to the infant, breast-feeding while using this drug is not recommended. 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.This drug should not be used with the following medications because very serious interactions may occur: estrogens, tamoxifen.If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting anastrozole.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use.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.

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.