SUMMARYThe efficacy and safety of oral sildenafil citrate for the treatment of erectile dysfunction (ED) were assessed in a 12‐week placebo‐controlled study. Men with ED of organic, psychogenic, or mixed aetiology were randomised to placebo (n=166) or 50 mg sildenafil (n=163), with adjustment to 100 mg or 25 mg based on efficacy and tolerability. Efficacy assessments...... hiện toàn bộ