Reply

Finasteride has been associated with reversible adverse sexual side effects in multiple randomized, controlled trials for the treatment of male pattern hair loss (MPHL). The Medicines and Healthcare Products Regulatory Agency of the United Kingdom and the Swedish Medical Products Agency have both updated their patient information leaflets to include a statement that ?persistence of erectile dysfunction after discontinuation of treatment with Propecia has been reported in post-marketing use.?

http://onlinelibrary.wiley.com/doi/10.1111/j.1743-6109.2011.02255.x/abstract