Ketoconazole ke to co na zole ke ah-z derivative of imidazole used as an antifungal agent. Development of these symptoms while taking ketoconazole should be reported to physician. Patient teaching Advise patient to watch for signs and symptoms of depression and to immediately report suicidal thoughts. And the organism responsible for tinea versicolor, Malassezia furfur Pityrosporum orbiculare. May cause nausea and vomiting small, frequent meals, frequent mouth care, sucking lozenges, or chewing gum may help headache mild analgesic may be necessary or dizziness use caution when driving. You may not be able to take ketoconazole, or you may require dosage adjustment, special monitoring, or special directions for use during your treatment. Hepatitis and, at high doses, lowered testosterone and ACTH osto ketoconazole online induced corticosteroid serum levels have been seen with orally administered these effects have not been seen with topical ketoconazole.