At a glance
ClinicalIndex Comparison RecordPhase 4Completed· 12 enrolled
Drug / intervention
Sildenafil (Viagra) +1 moredrug
Likely dose
Sildenafil (Viagra) 25 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.
Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Phase 4 Study of the Use of Sildenafil (Viagra) to Alter Fatigue, Functional Status and Impaired Cerebral Blood Flow in Patients With Chronic Fatigue Syndrome.
Charles Drew University of Medicine and Science·interventional·Posted Jan 22, 2008·Updated Jun 27, 2017
In Brief
A Phase 4 clinical trial evaluating Sildenafil (Viagra) and Placebo for Chronic Fatigue Syndrome. Completed, enrolled 12 participants across 1 site.
Detailed Summary
Use of Viagra to Alter Symptoms in Patients with Chronic Fatigue Syndrome (CFS)
Study Details
Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsChronic Fatigue Syndrome
CountriesUnited States
CollaboratorsPfizer
Timeline
Phase 4CompletedFinished
20022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024202520262027
Enrollment StartJul 2002
First PostedJan 2008
Primary CompletionDec 2010
TodayJul 2026
First PostedJan 22, 2008
Enrollment StartJul 1, 2002
Primary CompletionDec 1, 2010
TodayJul 2, 2026
Enrollment to primary: 8.4 yearsPosted 18.4 years ago
Interventions
Sildenafil (Viagra)drug
25 mg tid of either Sildenafil(Viagra) for first week. 50 mg tid of either Sildenafil (Viagra) for second week. 100 mg tid of either Sildenafil (Viagra) 3rd,4th, 5th and 6th week of study participation.
Placebodrug
Placebo pills 3X/day for 6 weeks