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Mild To Moderate Erectile Dysfunction Study

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: August 26, 2005
Last updated: September 3, 2011
Last verified: September 2011
Safety/Efficacy of 100-mg Viagra at 8 hours post dose in men with mild to moderate erectile dysfunction

Condition Intervention Phase
Drug: Viagra (Sildenafil Citrate) 100 mg
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Multicenter, Randomized, Double-Blind, Placebo-Controlled, Fixed-Dose Parallel Study of Men With Mild to Moderate Erectile Dysfunction to Evaluate the Efficacy of Viagra 8 Hours Post-Dose

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • To determine the proportion of sexual intercourses that are successful in men with mild to moderate ED 8 hrs after a dose of Viagra.

Secondary Outcome Measures:
  • To determine the proportion of sexual intercourses that are successful in men with mild to moderate ED 12 hrs after a dose of Viagra. Other questionnaires such as SEP, IIEF.

Enrollment: 355
Study Start Date: April 2005
Study Completion Date: February 2006

Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men 18-70 years of age
  • Documented clinical diagnosis of erectile dysfunction of at least 3 months duration.

Exclusion Criteria:

  • Subjects with penile implants
  • Subjects with a known history of retinitis pigmentosa.
  • Subjects, due to the requirement of 100 mg dosage, who are receiving concomitant treatment with the potent CYP3A4 inhibitor ritonavir.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00137072

  Show 33 Study Locations
Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Director, Clinical Trials Disclosure Group, Pfizer, Inc. Identifier: NCT00137072     History of Changes
Other Study ID Numbers: A1481230
Study First Received: August 26, 2005
Last Updated: September 3, 2011

Additional relevant MeSH terms:
Erectile Dysfunction
Sexual Dysfunction, Physiological
Genital Diseases, Male
Sexual Dysfunctions, Psychological
Mental Disorders
Sildenafil Citrate
Vasodilator Agents
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Urological Agents processed this record on May 22, 2017