Ketoconazole 2%; contains alcohol. Ketoconazole is an antifungal agent which inhibits the in vitro synthesis of ergosterol, a key sterol in the cell membrane of Malassezia furfur. The clinical ...

Mack Rachal, MD: , The ketoconazole can be at 2% and that requires a prescription. The 1% preparation is over-the-counter. Clobetasol is probably the most popular one. The reason you have these ...