Chris Schach

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* Griseofulvin is used to treat fungal infections, such as athlete's foot and ringworm.

Griseofulvin (Trade name: Grisovin) is an antifungal drug used to treat fungal infections of the skin (tinea) and nails. In other words, it treats jock itch, athlete's foot, and ringworm, as well as fungal infections of the scalp, fingernails, and toenails. Griseofulvin stops fungal cells dividing, but does not kill them outright, so it needs to be taken for a lengthy period of time. For most fungal infections, newer medications are more effective.


Griseofulvin comes as a tablet, capsule, and liquid to take by mouth. It is usually taken once a day, although it can be taken two to four times a day. Although your symptoms may get better in a few days, griseofulvin should be taken until the infection is completely gone. It is usually taken for 2 to 4 weeks for skin infections, 4 to 6 weeks for hair and scalp infections, 4 to 8 weeks for foot infections, 3 to 4 months for fingernail infections, and at least 6 months for toenail infections.

Side Effects

Side effects may include headache, upset stomach, vomiting, diarrhea or loose stools, thirst, fatigue, dizziness, or faintness. If any of these symptoms persist or become severe, notify your doctor. If you experience any of the following symptoms, notify your doctor as soon as possible: fever, sore throat, skin rash, mouth soreness or irritation.

Notes of Precaution

* Griseofulvin should not be taken during pregnancy. It could cause deformities in the fetus.

* Do not mix Griseofulvin with alcohol, as it can cause severe nausea and vomiting.

* If you are taking antacids, take them at least two hours before taking Griseofulvin.

* Griseofulvin can reduce the concentration of birth control pills, resulting in pregnancy.

* Notify your doctor if you are allergic to Griseofulvin, penicillin, or any other medications.

* Avoid unnecessary or prolonged exposure to sunlight and to wear protective clothing, sunglasses, and sunscreen. Griseofulvin may make your skin sensitive to sunlight.

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