Ketoconazole is an anti-fungal medication in the same family of drugs as fluconazole, itraconazole, and miconazole. It prevents growth of several types of fungi by preventing production of the membranes that surround fungal cells. Ketoconazole is an anti-fungal medication in the same family of drugs as fluconazole, itraconazole, and miconazole. It prevents growth of several types of fungi by preventing production of the membranes that surround fungal cells. read more