What is the role of finasteride in the treatment of hirsutism?

Updated: May 01, 2020
  • Author: George T Griffing, MD; Chief Editor: Michel E Rivlin, MD  more...
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Finasteride: Finasteride is a 5-alpha-reductase inhibitor approved for the treatment of benign prostatic hyperplasia. No adverse effects have been reported in women, and the efficacy is similar to that of spironolactone. In at least one study, finasteride was added to spironolactone, demonstrating an additive reduction in hirsutism scores. The main concern with finasteride, however, is the risk of ambiguous genitalia in male fetuses exposed to the enzyme inhibitor during the first trimester. Therefore, use this drug only in women who are postmenopausal with no chance of becoming pregnant.

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