• with mild erectile dysfunction who are sexually dissatisfied, as measured by the
• Erectile Dysfunction Inventory of Treatment Satisfaction at the end of the double-
• Measure the impact of treatment with VIAGRA on the treatment satisfaction in men
• blind treatment.

• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 2 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Analog Scales- Maintenance [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to Week 8 in Analog Scales- Reliability [ Time Frame: baseline to Week 8 ] [ Designated as safety issue: No ]
• Analog Scales- Firmness [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in International Index of Erectile Function (IIEF) Domain Scores- Orgasmic Function [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Global Efficacy Question 1 (GEQ1) Response at End of the Double-Blind Phase (Week 8) and at End of the Open-Label Phase (Week 14) [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Shift in Responder Rate From Week 8 to Week 14 for GEQ3 [ Time Frame: Week 8 to Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in International Index of Erectile Function (IIEF) Domain Scores- Sexual Desire [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in International Index of Erectile Function (IIEF) Domain Scores- Intercourse Satisfaction [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Percentage of Occasions of Successful Intercourse (Event Log) [ Time Frame: Week 8 to Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in International Index of Erectile Function (IIEF) Domain Scores- Overall Satisfaction [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Shift in Responder Rate From Week 8 to Week 14 for Global Efficacy Question (GEQ) 1 [ Time Frame: Week 8 to Week 14 ] [ Designated as safety issue: No ]
• International Index of Erectile Function (IIEF) Domain Scores- Erectile Function [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Global Efficacy Question 2 (GEQ2) Response at End of the Double-Blind Phase (Week 8) and at End of the Open-Label Phase (Week 14) [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Global Efficacy Question 3 (GEQ3) Response at End of the Double-Blind Phase (Week 8) and at End of the Open-Label Phase (Week 14) [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Analog Scales- General Sexual Performance [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Percentage of Occasions of Successful Intercourse (Event Log) [ Time Frame: Baseline to Week 8 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in Quality of Erection Questionnaire (QEQ) Total Score [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 1 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Percentage of Occasions of Ejaculation and/or Orgasm (Event Log) [ Time Frame: Week 8 to Week 14 ] [ Designated as safety issue: No ]
• Analog Scales- Reliability [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• International Index of Erectile Function (IIEF) Domain Scores- Intercourse Satisfaction [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS) Index [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• International Index of Erectile Function (IIEF) Domain Scores- Sexual Desire [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 0 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 1 [ Time Frame: Baseline to <= Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Frequency of Second Erections [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Erectile Distress Scale (EDS) Total Score [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 3 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Quality of Erection Questionnaire (QEQ) Total Score [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• International Index of Erectile Function (IIEF) Domain Scores- Overall Satisfaction [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 4 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to Week 8 in Analog Scales- Firmness [ Time Frame: baseline to Week 8 ] [ Designated as safety issue: No ]
• Change From Baseline to Week 8 in Analog Scales- General Sexual Performance [ Time Frame: baseline to week 8 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 0 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to End of Double-Blind Phase (Week 8) in Patient Reported Erectile Function Assessment (PREFA) Total Score [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of Second Erections Grade 3 or 4 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• International Index of Erectile Function (IIEF) Domain Scores- Orgasmic Function [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]
• Percentage of Occasions of Ejaculation and/or Orgasm (Event Log) [ Time Frame: Baseline to Week 8 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 4 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 3 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to Week 8 in Analog Scales- Maintenance [ Time Frame: baseline to Week 8 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in Erectile Distress Scale (EDS) Total Score [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Shift in Responder Rate From Week 8 to Week 14 for GEQ2 [ Time Frame: Week 8 to Week 14 ] [ Designated as safety issue: No ]
• Change From Baseline to End of DB Phase (Week 8) in International Index of Erectile Function (IIEF) Domain Scores- Erectile Function [ Time Frame: Week 8 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 2 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Baseline to <Week 8 and Week 8 to <=Week 14 in Event Log: Hardness of First Erections Grade 3 or 4 [ Time Frame: Baseline to <Week 8 and Week 8 to <=Week 14 ] [ Designated as safety issue: No ]
• Patient Reported Erectile Function Assessment (PREFA) Total Score [ Time Frame: Week 8, Week 14 ] [ Designated as safety issue: No ]

• Measure Viagra's effect on the Patient Reported Erectile Function Assessment; measure Viagra's effect on the erectile function parameters; measure treatment's
• effect on degree of bother; examine correlation between degree of bother and International Index of Erectile Function & Quality of Life; report Viagra's safety in this patient population.

Men's quality of life (QoL) is potentially affected by mild erectile dysfunction (ED) to the same extent as it is by moderate and severe ED. This study will provide controlled clinical data measuring efficacy, QoL parameters and satisfaction changes in men with mild ED treated with Viagra versus those treated with a placebo. With an open-label extension, this study will also provide all study subjects the opportunity to receive the active drug treatment for 6 weeks.

Inclusion Criteria:

• Men above age of majority
• Mild erectile dysfunction (IIEF-EF 22-25) and sexual dissatisfaction (IIEF-OS 7 or less)

Exclusion Criteria:

• Use of more than 4 doses of any PDE5 inhibitor in the past 12 weeks and use of any PDE5 inhibitor in the past 4 weeks
• Subjects currently taking any other commercially available drug or non-drug treatment for ED