15 citations,
June 1995 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride doesn't affect erections much, but may decrease libido in men.
14 citations,
June 1995 in “The Journal of Clinical Endocrinology and Metabolism” 13 citations,
November 2012 in “PubMed” 5α-reductase inhibitors may worsen sexual drive and spontaneous erections but don't worsen existing erectile or ejaculatory problems.
6 citations,
September 2010 in “Current Urology Reports” New treatments for long-lasting erections improve outcomes but must be timely to avoid lasting damage.
74 citations,
July 1991 in “The Journal of Urology” Minoxidil works better than nitroglycerin for treating impotence with fewer side effects.