Nizoral shampoo coupons Nizoral (Ketoconazole) is used to treat a variety of fungal infections. If these symptoms persist or get worse, contact your doctor. Tomography ct scans, and remove tissue. Nizoral shampoo has been successfully used in the 2% strength as a prescription shampoo for dandruff causing conditions like seborrhea, as well as for the treatment of psoriasis for several years now. When using this product avoid contact with eyes; if product gets into eyes, rinse thoroughly with water. If the fingers are warm, they should be rinsed in cold water and dried before handling the foam.