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PRECAUTIONS: Before taking griseofulvin, 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.This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain blood disorder (porphyria), severe liver disease (liver failure).Before using this medication, tell your doctor or pharmacist your medical history, especially of: lupus.This drug may make you dizzy or less alert. Do not engage in activities requiring alertness such as driving or using machinery until you know how this drug affects you and that you can safely perform these activities.Avoid alcoholic beverages while you are taking this drug unless your doctor gives permission. Drinking alcohol during treatment with this drug could result in a fast heartbeat and flushing of the skin.This medication may make you more sensitive to the sun. Avoid prolonged sun exposure, tanning booths, and sunlamps. Use a sunscreen and wear protective clothing when outdoors.This medication is not recommended for use during pregnancy. It may harm an unborn baby. Consult your doctor for more details and to discuss delaying griseofulvin treatment. Use of reliable form(s) of birth control is recommended during treatment and for 1 month after the drug is stopped. If you are planning to become pregnant within 1 month after treatment, the manufacturer recommends avoiding this drug. (See also Drug Interactions.)The effects of this drug on human sperm are unknown. However, based on animal cell studies, the manufacturer recommends waiting for a period of time after completing griseofulvin treatment before trying to father a child. Discuss the risks and benefits with your doctor, and ask how long to wait after your last dose before trying to father a child.It is unknown if this drug passes into breast milk. 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: barbiturates (e.g., phenobarbital), warfarin.This medication may decrease the effectiveness of birth control pills. This can result in pregnancy. You may need to use an additional form of reliable birth control while using this medication. Consult your doctor or pharmacist for details.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.