Assessment Of Sildenafil On Erectile Function And Intercourse Satisfaction And To Validate A New Subject Questionnaire

A Multi-Center, Double-Blind Placebo Controlled, Flexible-Dose Study With An Open-Label Phase To Assess The Efficacy Of Sildenafil Citrate On Erectile Function And Intercourse Satisfaction As Well As To Validate The Sexual Experience Questionnaire And Its Treatment Responsiveness In Men With Erectile Dysfunction

To evaluate the effectiveness of sildenafil on erectile function and intercourse satisfaction in men with ED as well as to validate the new Sexual Experience Questionnaire which incorporates functional and emotional elements of a man's sexual experience into one comprehensive questionnaire.

Inclusion Criteria:

• Documented clinical diagnosis of erectile dysfunction, defined by a score of less than or equal to 25 on the Erectile Dysfunction domain of the International Index of Erectile Function

Exclusion Criteria:

• Subjects who have been treated with more than 6 doses of sildenafil or any other phosphodiesterase type 5 inhibitor