Nizoral is an antidandruff shampoo that your doctor may recommend as part of your hair loss treatment. It contains an antifungal that targets dandruff-producing fungus in the scalp. Nizoral also reduces hormonal activity of testosterone and other androgens that lead to male-pattern baldness, and stimulates the growth of healthy scalp cells. This results in a healthier scalp allowing other hair loss treatments to work more effectively. Nizoral should be used twice weekly or as recommended by your doctor, and is effective when used with other hair-loss medications such as Propecia or Rogaine.