Persistent Sexual Side Effects of Finasteride for Male Pattern Hair Loss

March 2011 in “ The Journal of Sexual Medicine ”

Michael S. Irwig, Swapna Kolukula

finasteride male pattern hair loss low libido erectile dysfunction decreased arousal problems with orgasm Propecia

Studysummary This study found that 94% of healthy men reported low libido and 92% reported erectile dysfunction as persistent sexual side effects after using finasteride for male pattern hair loss, with these effects lasting on average 40 months post-discontinuation.

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research The Importance of Dual 5α-Reductase Inhibition in the Treatment of Male Pattern Hair Loss: Results of a Randomized Placebo-Controlled Study of Dutasteride Versus Finasteride

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This study found that dutasteride increased scalp hair growth in men with male pattern hair loss, particularly at a 2.5 mg dose, and was more effective than finasteride over 24 weeks.

research The Effects of Transdermal Dihydrotestosterone in the Aging Male: A Prospective, Randomized, Double-Blind Study

110 citations , April 2002 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism”

Dihydrotestosterone gel improved well-being and sexual function in older men without negatively affecting prostate health.

research Finasteride

125 citations , January 1999 in “Drugs”

This study found that oral finasteride 1 mg/day promotes hair growth and prevents further hair loss in a significant proportion of men with male pattern hair loss over two years.

research Finasteride in the Treatment of Men with Androgenetic Alopecia

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In male pattern hair loss, this study found that finasteride 1 mg daily significantly slowed hair loss and increased hair growth over two years compared to placebo.