Nizoral anti-dandruff shampoo (ketoconazole)Nizoral anti-dandruff shampoo contains the active ingredient ketoconazole, which is a type of medicine called an antifungal. It is used to treat infections with fungi and yeasts.Ketoconazole kills fungi and yeasts by interfering with their cell membranes. It works by stopping the fungi from producing a substance called ergosterol, which is an essential component of fungal cell membranes. The disruption in production of ergosterol disrupts the fungal cell membrane, causing holes to appear in it.
