This study is a randomized, double-blind, placebo-controlled, two-cohort, three-cycle crossover (at least a 5-day cleaning period per cycle), and a multicenter clinical trial design. The pharmacodynamic effects of different doses of TPN171H tablets on mild to moderate male patients with erectile dysfunction were evaluated by penile plethysmography (RigiScan PlusTM technique) using audiovisual sexual stimulation (AVSS).
This study is a randomized, double-blind, placebo-controlled, two-cohort, three-cycle crossover (at least a 5-day cleaning period per cycle), and a multicenter clinical trial design.