Nizoral is a brand name for the antifungal medication known as ketoconazole. It is primarily used to treat a variety of fungal infections, particularly those affecting the skin, mouth, throat, and other parts of the body. Nizoral works by disrupting the cell membrane of fungi, thereby stopping their growth and spread. It is available in various forms, including topical creams, shampoos, and oral tablets, making it versatile for treating conditions such as dandruff, athlete's foot, ringworm, and yeast infections. While effective, it is important for users to follow their healthcare provider's instructions when using Nizoral to ensure safety and achieve the best outcomes.