Nizoral Shampoo
Ketoconazole
(C₂₆H₂₈Cl₂N₄O₄)

Ketoconazole is a topical antifungal used to treat many fungus and yeast infections of the skin.  Ketoconazole is an active ingredient in some creams and shampoos.  The active ingredient in Nizoral shampoo is 1% ketoconazole.  This type of ketoconazole is the only form that is available over the counter, other types are by prescription only.  In shampoos ketoconazole helps treat the fungus that causes dandruff.  Some of the side affects of this compound are itching, stinging, or irritation of the scalp and skin.  It also may cause dry skin and dryness or oiliness if the hair and scalp.