Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 9, 2026, 9:27 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 73–96 of 177 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Viagra (sildenafil citrate) Clear all
Completed Phase 4 Interventional

Study of Sildenafil for Treatment of SSRI-Antidepressant Sexual Dysfunction in Women

NCT00375297
View directory record Official record
Conditions
Sexual Dysfunction, Depression
Interventions
sildenafil
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Sep 12, 2006 · Synced Oct 9, 2026, 9:27 PM EDT
Terminated Early Phase 1 Interventional Results available

Testosterone for Penile Rehabilitation After Radical Prostatectomy

NCT00848497
View directory record Official record
Conditions
Hypogonadism, Erectile Dysfunction
Interventions
Testim®, Placebo Testim®, Viagra®
Drug · Other
Lead sponsor
Mohit Khera
Other
Eligibility
18 Years and older · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 19, 2015 · Synced Oct 9, 2026, 9:27 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Use of Sildenafil for Treatment of Urinary Incontinence

NCT02983461
View directory record Official record
Conditions
Urinary Incontinence
Interventions
Sildenafil, Placebo
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
50 Years to 80 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2028
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Results available

Sildenafil in Single Ventricle Patients

NCT01169519
View directory record Official record
Conditions
Heart Disease
Interventions
Sildenafil by injection
Drug
Lead sponsor
Duke University
Other
Eligibility
3 Months to 120 Months
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 5, 2013 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PDE Inhibitors in DMD Study (Acute Dosing Study)

NCT01580501
View directory record Official record
Conditions
Duchenne Muscular Dystrophy
Interventions
Tadalafil and Sildenafil
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
7 Years to 15 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 28, 2014 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 2 Interventional

An Open-Label, Extension Study Evaluating the Safety, Toleration, and Efficacy of Sildenafil in Women With Sexual Arousal Disorder

NCT00746967
View directory record Official record
Conditions
Sexual Dysfunctions, Psychological, Sexual Arousal Disorder
Interventions
sildenafil
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
82
States / cities
Huntsville, Alabama • Anchorage, Alaska • Tucson, Arizona + 68 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Compare the Blood Levels of Sildenafil Following Administration of an Experimental Tablet vs. the Conventional Oral Tablet in Healthy Subjects

NCT00866463
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
Sildenafil
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 9, 2026, 9:27 PM EDT
Completed No phase listed Observational Results available

Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies

NCT01266265
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
inhaled prostacyclin, prostacyclin, subcutaneous and intravenous prostacyclin, oral ERA, oral PDE5 inhibitors
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
1,333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
88
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Oct 9, 2026, 9:27 PM EDT
Terminated Phase 2 Interventional Results available

A Research Study To Assess The Effectiveness And Safety Of Different Doses Of Oral PF-00489791 In The Treatment Of Adult Patients With Pulmonary Arterial Hypertension

NCT00853112
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
PF-00489791, placebo, sildenafil
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
8
States / cities
Phoenix, Arizona • Gainesville, Florida • Omaha, Nebraska + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2017 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 4 Interventional

A Multicenter, Randomized, Parallel Group, Double-Blind, Placebo Controlled, Flexible Dose Escalation Study To Evaluate Sexual And Relationship Satisfaction In The Female Partner Of Men With Erectile Dysfunction Treated With Sildenafil Citrate

NCT00644631
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
sildenafil, placebo
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
21 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
31
States / cities
Huntsville, Alabama • Little Rock, Arkansas • Beverly Hills, California + 26 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Sildenafil to Improve Exercise Capacity in People With Thalassemia and Pulmonary Hypertension

NCT00872170
View directory record Official record
Conditions
Thalassemia, Hypertension, Pulmonary
Interventions
Sildenafil
Drug
Lead sponsor
Carelon Research
Other
Eligibility
7 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Feb 21, 2014 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 2 Interventional Results available

Sorafenib, Valproic Acid, and Sildenafil in Treating Patients With Recurrent High-Grade Glioma

NCT01817751
View directory record Official record
Conditions
Glioblastoma, Recurrent Adult Brain Neoplasm, Malignant Glioma, WHO Grade III Glioma
Interventions
sorafenib tosylate, valproic acid, sildenafil citrate
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 17, 2024 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 4 Interventional

An Open Label, Dose Finding Trial of Viagra for the Treatment of Neuropathic Pain (in Diabetes Mellitus)

NCT00194909
View directory record Official record
Conditions
Diabetic Neuropathy
Interventions
sildenafil (Viagra)
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 25, 2008 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 3 Interventional Results available

Concomitant Use of PriLigy in Men Treated for Erectile Dysfunction

NCT01063855
View directory record Official record
Conditions
Erectile Dysfunction, Sexual Dysfunction
Interventions
Placebo, Dapoxetine, PDE5I (phosphodiesterase-5 inhibitor)
Drug
Lead sponsor
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Industry
Eligibility
18 Years and older · Male only
Enrollment
495 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
19
States / cities
Decatur, Alabama • Huntsville, Alabama • Englewood, Colorado + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2013 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 4 Interventional

A Placebo-Controlled Single-Dose Trial of Sildenafil in Schizophrenia

NCT00455715
View directory record Official record
Conditions
Schizophrenia
Interventions
Sildenafil
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 29, 2011 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 2 Interventional Results available

Safety of Sildenafil in Premature Infants With Severe Bronchopulmonary Dysplasia

NCT04447989
View directory record Official record
Conditions
Bronchopulmonary Dysplasia of Newborn
Interventions
Sildenafil, Placebo
Drug
Lead sponsor
Christoph Hornik
Other
Eligibility
Up to 29 Weeks
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
25
States / cities
Little Rock, Arkansas • San Diego, California • Washington D.C., District of Columbia + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Oct 9, 2026, 9:27 PM EDT
Terminated Phase 4 Interventional

Trial of Viagra' in Men With Chronic Pelvic Pain Syndrome Type III

NCT00194597
View directory record Official record
Conditions
Prostatitis
Interventions
Viagra (sildenafil citrate)
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 22, 2008 · Synced Oct 9, 2026, 9:27 PM EDT
Not yet recruiting Early Phase 1 Interventional

Asciminib With or Without Sildenafil for Brain Tumors

NCT07039760
View directory record Official record
Conditions
Brain Tumor
Interventions
Asciminib, Sildenafil, Surgical resection or biopsy
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 39 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

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

NCT00333281
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
tadalafil
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
30 Years to 65 Years · Male only
Enrollment
198 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 25, 2007 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 3 Interventional

Study to Assess the Longterm Safety of Sildenafil Citrate in Patients With Pulmonary Arterial Hypertension

NCT00159887
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Sildenafil citrate
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
24
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 13 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Open-Label, Within-Subject Dose-Escalation Study to Evaluate the Clinical Safety and Pharmacokinetic Profile of a Topical Sildenafil Cream (5% w/w), in Healthy Postmenopausal Women

NCT02364882
View directory record Official record
Conditions
Female Sexual Health
Interventions
Sildenafil
Drug
Lead sponsor
Strategic Science & Technologies, LLC
Industry
Eligibility
35 Years to 65 Years · Female only
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 22, 2015 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Phase 1 Interventional

Treatment of Supine Hypertension in Autonomic Failure

NCT00223717
View directory record Official record
Conditions
Hypertension
Interventions
Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
Drug · Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 9, 2026, 9:27 PM EDT
Terminated Phase 1 Interventional

Sildenafil and Stroke Recovery

NCT02628847
View directory record Official record
Conditions
Stroke
Interventions
sildenafil citrate, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 80 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 5, 2017 · Synced Oct 9, 2026, 9:27 PM EDT
Completed Not applicable Interventional

Effect of Nightly Versus Prn Sildenafil on Early Return of Erectile Function Following Laparoscopic Radical Prostatectomy

NCT00511498
View directory record Official record
Conditions
Prostate Cancer
Interventions
Sildenafil
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 64 Years · Male only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 1, 2008 · Synced Oct 9, 2026, 9:27 PM EDT