Efficacy and safety of finasteride therapy for benign prostatic hyperplasia: results of a 2-year randomized controlled trial (the PROSPECT Study)
PDF: pubmedcentral.nih.gov/picren … obtype=pdf
Selected material:
“… the incidence of adverse events related to sexual dysfunction were significantly higher in the finasteride group than in the placebo group (ejaculation disorder 7.7% v. 1.7% and impotence 15.8% v. 6.3%; p < 0.01 for both parameters).”
“… Regardless of the treatment group, the symptoms of sexual dysfunction tended to be of long duration and to arise earlier rather than later in the study period.”