G G G Vin Griseofulvin Phenobarbitone
ModeratePhenobarbital reduces griseofulvin levels and antifungal efficacy.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.
Clinical management: Monitor response. A higher griseofulvin dose may be needed.