Generic Nizoral Drug Information - Usage, Side Effects and DosageGeneric for Nizoral Drug Information - Usage, Side Effects and Dosage Generic Nizoral (Ketoconazole) is an antifungal used to treat or prevent the symptoms of fungal infections. Generic Nizoral treats fungal infections such as ringworm of the body (tinea corporis), ringworm of the groin (tinea cruris or jock itch), sun fungus (tinea versicolor, pityriasis versicolor), dandruff, and other systemic (throughout the body) fungal infections. Like most medications, Generic Nizoral can cause some temporary side effects. It is pertinent to note that Generic Nizoral side effects cannot be anticipated. If they continue it is imperative that you contact your doctor immediately. The most common Side Effects of Generic Nizoral are breast swelling and tenderness, or sexual difficulties (impotence) in men, drowsiness or dizziness and eyes get more sensitive to light. Some of the most serious Generic Nizoral side Effects include dark yellow or brown urine loss of appetite redness, blistering, peeling or loosening of the skin, including inside the mouth and skin rash, itching. This is not a complete list of all Side effects. Do concur with your doctor and follow his directions completely when you are taking Generic Nizoral.