To Determine How Different Doses of Tadalafil Work on Getting and Keeping an Erection 26 or 36 Hours After Taking
Conditions
Interventions
- DRUG: tadalafil
- DRUG: placebo
- DRUG: tadalafil
- DRUG: tadalafil
- DRUG: tadalafil
- DRUG: placebo
Sponsor
Eli Lilly and Company
Collaborators