Comparison of the Clinical Efficacy of Daily Use of L-arginine, Tadalafil, and Combined L-arginine with Tadalafil in the Treatment of Elderly Patients with Erectile Dysfunction
This 2020 single-blind, placebo-controlled clinical trial assessed the efficacy of daily oral administration of L-arginine (5 g), tadalafil (5 mg), and their combination in 120 men aged ≥60 years with erectile dysfunction (ED). Participants were randomized into four groups (n=30 each) receiving L-arginine, tadalafil, combined therapy, or placebo for 6