Study the Safety and Effectiveness of Tadalafil in Men With Diabetes Who Have Problems Getting and Keeping an Erection

This study has been completed.
ICOS Corporation
Information provided by:
Eli Lilly and Company Identifier:
First received: October 18, 2007
Last updated: NA
Last verified: October 2007
History: No changes posted

Study to evaluate the safety and effectiveness of 2.5 mg and 5 mg tadalafil when taken by men with diabetes mellitus who have problems getting and maintaining an erection.

Condition Intervention Phase
Drug: tadalafil
Drug: placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
Official Title: A Randomized, Double-Blind, Parallel-Design, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Tadalafil (2.5 mg and 5 mg) Administered Once Daily to Men With Diabetes Mellitus and Erectile Dysfunction

Resource links provided by NLM:

Further study details as provided by Eli Lilly and Company:

Primary Outcome Measures:
  • Effectiveness measured by IIEF score of questions 1-5 and 15 plus the percentages of positive responses to questions 2 and 3 in the SEP diary [ Time Frame: 12 weeks ]

Secondary Outcome Measures:
  • Change in the GAQ, SEP, IIEF, SEAR, and RSE scores. [ Time Frame: 12 weeks ]

Enrollment: 298
Study Start Date: October 2004
Study Completion Date: May 2005
Arms Assigned Interventions
Active Comparator: 2
2.5 mg tadalafil
Drug: tadalafil
2.5 mg tadalafil tablet taken by mouth once a day, no more than 1 dose a day, for 12 weeks
Other Names:
  • LY450190
  • Cialis
  • IC351
Active Comparator: 3
5 mg tadalafil
Drug: tadalafil
5 mg tadalafil tablet taken by mouth once a day, no more than 1 dose a day, for 12 weeks
Other Names:
  • LY450190
  • Cialis
  • IC351
Placebo Comparator: 1 Drug: placebo
Placebo tablet taken by mouth once a day, no more than 1 dose per day, for 12 weeks


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • History of erectile dysfunction for at least 3 months.
  • Currently have diabetes mellitus of at least 3 months duration.
  • Agree to not use any other ED treatment during the study.
  • Anticipate the same female sexual partner for the study.
  • Must be willing to make the required number of sexual attempts.

Exclusion Criteria:

  • History of other primary sexual disorder
  • Treatment with nitrates or potent CYP3A4 inhibitors
  • Have a penile implant or clinically significant penile deformity
  • History of certain heart problems
  • Have kidney or liver problems
  Contacts and Locations
Please refer to this study by its identifier: NCT00547183

For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Genthin, Germany
Sponsors and Collaborators
Eli Lilly and Company
ICOS Corporation
Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern Time (UTC/GMT - 5 hours, EST) Eli Lilly and Company
  More Information

Additional Information:
No publications provided by Eli Lilly and Company

Additional publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00547183     History of Changes
Other Study ID Numbers: 8702, H6D-MC-LVFZ
Study First Received: October 18, 2007
Last Updated: October 18, 2007
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Erectile Dysfunction
Sexual Dysfunction, Physiological
Genital Diseases, Male
Sexual Dysfunctions, Psychological
Sexual and Gender Disorders
Mental Disorders
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Vasodilator Agents
Cardiovascular Agents
Therapeutic Uses processed this record on April 16, 2014