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To Determine Effect and Safety of Tadalafil Taken by Men of Different Races and With Different Diseases When Needed for Erections

An Open-Label Study to Evaluate the Efficacy and Safety of Tadalafil Administered On Demand to Men of Various Populations With Erectile Dysfunction

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00547417
Enrollment
1933
Registered
2007-10-22
Start date
2003-07-31
Completion date
2004-03-31
Last updated
2007-10-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Impotence

Brief summary

To compare men of different races and those with diabetes or depression to white men that do not have diabetes or depression but also suffer from the inability to get or keep an erection.

Interventions

DRUGtadalafil

20 mg tadalafil tablet taken by mouth, as needed, no more than once a day, for 12 weeks.

Sponsors

ICOS Corporation
CollaboratorINDUSTRY
Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* At least 3 months history of erectile dysfunction (ED) * Anticipate a monogamous relationship with a female sexual partner * Be able to make minimum required sexual intercourse attempts * Abstain from using any other ED treatment

Exclusion criteria

* Other primary sexual disorders * History of penile implant or clinically significant penile deformity * History or current nitrate use * History of certain heart problems * History of certain kidney problems

Design outcomes

Primary

MeasureTime frame
Change in the scores of the IIEF scale's Erectile Function domain, questions 1-5 and 1512 weeks

Secondary

MeasureTime frame
Percentage of Yes answers to questions 2 and 3 of the Sexual Encounter Profile12 weeks
Evaluation of score changes for selected GAQ, PAIRS, and IIEF questions.12 weeks

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026