Ketoconazole is used to treat serious fungal or yeast infections, such as candidiasis (thrush, oral thrush), blastomycosis (Gilchrist's disease), coccidioidomycosis (Valley fever, San Joaquin Valley fever), histoplasmosis (Darling's disease), chromoblastomycosis (chromomycosis), or paracoccidioidomycosis
SIDE EFFECTS
The most common side effects of this medicine include stomach pain, headache, feeling sick (nausea), and abnormal liver function. These are not usually serious, but you should call your doctor if you think you might have a severe allergic reaction.
THINGS TO AVOID WHEN TAKING THIS MEDICINE
Ketoconazole may be taken with or without food. You should avoid consumption of grapefruit, grapefruit juice, or any supplements that contain grapefruit extract during treatment with ketoconazole unless directed otherwise by your doctor. Grapefruit juice may increase the blood levels of ketoconazole.