Evaluation of Sexual Function With an International Index of Erectile Function in Subjects Taking Finasteride for Androgenetic Alopecia

February 2005 in “ The Journal of Urology ”

Allen D. Seftel

finasteride androgenetic alopecia International Index of Erectile Function IIEF Propecia

TLDR Finasteride for hair loss doesn't harm erectile function; weight loss and exercise improve it.

This document includes two studies related to sexual function. The first study evaluated sexual function in men taking finasteride for androgenetic alopecia using the International Index of Erectile Function (IIEF) and found no negative impact on erectile function after 4 to 6 months of treatment. However, the study did not assess libido or ejaculation. The second study was a randomized controlled trial of 110 obese men with erectile dysfunction, which found that weight loss and increased physical activity improved erectile function as measured by the IIEF score.

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Finasteride, Not Tamsulosin, Increases Severity of Erectile Dysfunction and Decreases Testosterone Levels in Men With Benign Prostatic Hyperplasia

research Finasteride, Not Tamsulosin, Increases Severity of Erectile Dysfunction and Decreases Testosterone Levels in Men With Benign Prostatic Hyperplasia

20 citations, June 2015 in “Hormone Molecular Biology and Clinical Investigation”

Finasteride worsens erectile dysfunction and lowers testosterone in men with enlarged prostates, unlike tamsulosin.

Evaluation of Sexual Function With an International Index of Erectile Function in Subjects Taking Finasteride for Androgenetic Alopecia

research Evaluation of Sexual Function With an International Index of Erectile Function in Subjects Taking Finasteride for Androgenetic Alopecia

44 citations, July 2004 in “Archives of Dermatology”

Finasteride for hair loss has minimal impact on sexual function.

research Evaluation of Sexual Function in Subjects Taking Finasteride for the Treatment of Androgenetic Alopecia

36 citations, September 2001 in “Journal of The European Academy of Dermatology and Venereology”

Finasteride doesn't reduce sexual function in people with hair loss.