Finasteride (oral)
A daily 1 mg tablet that treats the hormonal cause of male pattern baldness by lowering DHT, the hormone that shrinks sensitive follicles. In most men it slows or stops further loss, and many see some regrowth, especially on the crown.
A small number of men may notice reduced libido or sexual side effects, and mood changes have been reported. Your doctor will discuss these before you start. Women who are or may become pregnant should not handle broken tablets.