SIDE EFFECTS: Headache, nausea, vomiting, diarrhea, stomach upset, tiredness, dizziness, or trouble sleeping may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if any of these unlikely but serious side effects occur: numbness/tingling of the hands/feet, mental/mood changes (e.g., confusion, trouble doing normal activities), hearing changes, butterfly-shaped facial rash (around the nose and cheeks), joint/muscle pain. Tell your doctor right away if any of these rare but very serious side effects occur: yellowing eyes/skin, stomach/abdominal pain, persistent nausea/vomiting, dark urine, signs of kidney problems (such as change in the amount of urine, frothy urine), signs of infection (e.g., fever, persistent sore throat). Use of this medication for prolonged or repeated periods may result in oral thrush or a new vaginal yeast infection (oral or vaginal fungal infection). Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge, or other new symptoms. A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

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. Alcohol or marijuana can make you more dizzy or much less alert. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. 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. Talk to your doctor if you are using marijuana. This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned or have skin blisters/redness. 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 hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use additional reliable birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well. 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 someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.