Nizral Shampoo is used for treating certain fungal infections of the skin. The active pharmaceutical ingredient present in Nizral Shampoo is Ketoconazole.

Nizral Shampoo contains Ketoconazole which treats seborrheic dermatitis, a common cause of dandruff. Ketoconazole is changing the pH level of the scalp, which in turn inhibits the conditions for fungal infections to remain. You should apply this shampoo 2 times a week for a period for 14 to 30 days. Use a non-medicated shampoo on the other days. Apply Nizoral to a wet scalp and leave for 3 - 5 minutes before rinsing thoroughly.

The side effects include: headache, vomiting, constipation, nausea, feeling dizzy. It is extremely rare but it may cause liver problems.

Nizral Shampoo is for external use only. Nizral Shampoo is not recommended for use during pregnancy or while nursing infants. Small amounts of Ketoconazole can appear in breast milk.

You are advised to avoid alcohol during treatment as it the combination may cause nausea and vomiting.