Efficacy and tolerability of sildenafil/l‐arginine combination relative to sildenafil alone in patients with organic erectile dysfunction

Background Erectile dysfunction is defined as inability to achieve or maintain penile erection sufficient for sexual satisfaction. It is a serious problem that increases by age. The physiology of penile erection depends mainly on nitric oxide release. Objectives Compare the efficacy and safety of oral sildenafil 50 mg alone or in combination with l ‐arginine 3 g/day orally on the treatment of erectile dysfunction. Material and methods Randomized...