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What are the side effects of Rogaine?

Rogaine (generic name minoxidil) is a medicated lotion used to treat baldness or hair loss. It’s available in two percent and five percent (lotion and foam) solutions. You apply it twice daily, directly onto the scalp in the hair loss area. In 1988, the U.S. Food and Drug Administration approved Rogaine for the treatment of hereditary male pattern baldness. The two-percent solution is also approved for female pattern hair loss.

The most commonly reported side effects of Rogaine are itching and irritation on the treated areas of the scalp. Pregnant or nursing women should not use Rogaine. Also, people who are age 18 or younger should not use this product unless directed by a doctor. If you don't have a family history of hair loss, or if your hair loss is patchy or sudden, check with your doctor before trying Rogaine.

Sources:
Micromedex® Healthcare Series. Thomson Micromedex, 2006.
Rogaine product information, Pfizer Inc., 2006.
Medline Plus. Medline, 2006.

This answer prepared 3/20/2001.
This information updated 12/05/2006.