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PRECAUTIONS: Tell your doctor your medical history, especially of: migraine headaches, blood clots, strokes, eye (vascular retinal) disease, high blood pressure, diabetes, obesity, asthma, high cholesterol, seizures, heart problems, kidney problems, liver problems, cancer, abnormal vaginal bleeding, vaginal fibroids, family history of cancer, lupus (SLE) or rheumatoid arthritis, mood disorders (e.g., depression), drug allergies. If you become bedridden, you are more likely to experience serious drug side effects (blood clots); consult your doctor. This drug may cause a patchy, darkening of the skin on the face (melasma). Sunlight may intensify this darkening, and you may need to avoid prolonged sun exposure and sunlamps. Consult your doctor regarding use of sunscreens and protective clothing. This medication must not be used during pregnancy. If you become pregnant or think you may be pregnant, inform your doctor immediately. Avoid pregnancy for at least one month after stopping this medication. Use non-hormone birth control (e.g., latex condoms) during that time. Tell your doctor immediately if you miss your menstrual period, since this medication must not be used if you are pregnant. This medication passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Tell your doctor of all prescription and nonprescription medication you may use, especially of: all antibiotics, barbiturates (e.g., phenobarbital, primidone), carbamazepine, ethosuximide, phenytoin, rifamycins (e.g., rifampin), pain medication, antihistamines (e.g., diphenhydramine), migraine medication (e.g., sumatriptan), griseofulvin, isoniazid, ascorbic acid (vitamin C), nitrofurantoin, high blood pressure drugs, beta-blockers (e.g., propranolol), corticosteroids (e.g., prednisone), diabetes medications, "blood thinners" (e.g., warfarin), psychiatric medications, theophylline, certain anti-anxiety drugs (e.g., diazepam), phenylbutazone. Cigarette smoking increases the risk of serious side effects. Tell your doctor if you smoke or if you have recently stopped smoking. Do not smoke while using this medication. Oral birth control pills should not be taken while using this product, since this medication can act as a birth control pill. Also, side effects may be increased if you take this with birth control pills. Ask your doctor or pharmacist for details. This drug may interfere with certain laboratory tests (such as LH and FSH levels). Do not start or stop any medicine without doctor or pharmacist approval.

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.