You should know about ketoconazole: "Ketoconazole reaches the surface of the skin through normal blood circulation. Nizoral shampoo is unique because its effect is long lasting. Ketoconazole can be used for treating the hairy part of the head or for more extent areas on the chest or in the face. The head or for more extent areas on the chest or in the face. It is better not to give Ketoconazole in the presence of acid thus it is better not to give Ketoconazole in the presence of acid thus it is better not to give Ketoconazole in the presence of antacids. Nizoral shampoo can be used in the treatment of Cushing's disease, where an excess amount of adrenal hormone is produced. Treatment of fungal infections is prolonged, often requiring months depending on how deep the infection is and how strong the patient's immune system is. Nizoral shampoo is a preparation intended for treatment of skin infections caused by fungi or yeasts. Fungal infections is prolonged, often requiring months depending on how deep the infection is and how strong the patient's immune system is."