Viagra® (sildenafil citrate), known for improving erectile dysfunction (ED), also effectively treats prostate and lower urinary tract symptoms (LUTS) associated with prostate enlargement, which often occur with ED, a Northwestern University study has found.

Kevin V. McVary, M.D., professor of urology at Northwestern University Feinberg School of Medicine, led the study, which he presented at a meeting of the Sexual Medicine Society of North America on Nov. 21 in New York.

McVary and members of the clinical trial conducted a 12-week, double-blind, placebo-controlled study of Viagra in men aged 45 years and older had ED and LUTS associated with benign prostatic hyperplasia (BPH), an enlargement of the prostate gland that causes an obstruction in the flow of urine through the urethra.

Study participants were assessed for changes in erectile function, self, LUTS associated with BPH, of life, and maximum urinary flow. Results of the study showed that men who took Viagra (either at bedtime or 30 to an hour before anticipated sexual activity experienced a significant improvement in erectile function, self-esteem, and quality of life, with a concomitant decrease in both the irritative and obstructive symptoms of BPH.

More than half of men over 40 years difficulties getting or maintaining an erection. Over half of men 50 years and older have some signs of BPH. Research has shown that more than 70 percent of men with B also have ED.

Results of this study have important implications concerning the of concomitant prostate symptoms and ED.