Conditions: Erectile Dysfunction
Keywords: Erectile Dysfunction
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 372
Healthy volunteers: yes

Brief summary:
The purpose of this study is to determine the day of onset of efficacy of tadalafil dosed once-a-day.

Detailed description:

Arms:
arm 1: No drug during baseline period, 2.5 mg for 14 days, then will continue at 5 mg for 14 days. arm 2: No drug during baseline period, 5 mg for 14 days, then will continue at 5 mg for 14 days. arm 3: No drug during baseline period, placebo for 14 days, then will continue tadalafil at 5 mg for 14 days.

Interventions: intervention 1: Placebo intervention 2: Tadalafil
Intervention descriptions: intervention 1: One tablet orally daily intervention 2: Orally once daily

Protocol document: