A Study of Visual Effects of Erectile Dysfunction Medications Dosed Daily for Six Months

October 23, 2007 updated by: Eli Lilly and Company

A Randomized, Double-Blind, Parallel-Design, Placebo-Controlled Study to Evaluate the Effects of 5 mg Tadalafil (IC351, LY450190) and 50 mg Sildenafil Administered Once Daily for 6 Months on Visual Function in Healthy Subjects or Subjects With Mild Erectile Dysfunction

This is a multicenter, randomized, double-blind, placebo-controlled study to evaluate the effects on vision of six months of daily dosing of 5 mg tadalafil or 50 mg sildenafil compared with placebo.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment

198

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Indiana
      • Indianapolis, Indiana, United States
        • 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.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

30 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Healthy male subjects or males with mild erectile dysfunction (ED).
  • Between the ages of 30 and 65 years, inclusive.

Exclusion Criteria:

  • Phosphodiesterase type 5 (PDE5) inhibitor therapy (tadalafil, sildenafil, or vardenafil) within 6 weeks of the start of the study.
  • Diagnosis of diabetes mellitus.
  • Any chronic illness or medication that is a risk factor for eye disease or any medication that causes retinal toxicity or affects visual function.
  • Certain chronic medical conditions including unstable angina pectoris, severe renal [kidney] insufficiency, clinically significant hepatobiliary [liver, bile duct] disease, cancer, and AIDS/HIV.
  • A history of clinically significant chronic ophthalmologic disease or any significant visual abnormality identified at the start of the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Change in dark-adapted bright flash b-wave amplitude on electroretinography (ERG) testing at baseline, 3 & 6 months on drug, and 4-6 weeks after discontinuation of drug.

Secondary Outcome Measures

Outcome Measure
Five other ERG waveform components; intraocular pressure; visual acuity; peripheral vision; color discrimination; and inspection of anterior chamber, lens, and retinal anatomy.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Eli Lilly and Company

Collaborators

ICOS Corporation

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2005

Study Completion (Actual)

August 1, 2006

Study Registration Dates

First Submitted

May 31, 2006

First Submitted That Met QC Criteria

May 31, 2006

First Posted (Estimate)

June 2, 2006

Study Record Updates

Last Update Posted (Estimate)

October 25, 2007

Last Update Submitted That Met QC Criteria

October 23, 2007

Last Verified

October 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 9520
  • H6D-MC-LVGO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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