- Conditions
- Scleroderma, Mildly Elevated Pulmonary Pressures
- Interventions
- Sildenafil, Placebo
- Drug · Other
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2026
- U.S. locations
- 2
- States / cities
- New Orleans, Louisiana • Baltimore, Maryland
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.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 25–48
of 177
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Alveolitis, Fibrosing, Fibrosis, Pulmonary, Hypertension, Pulmonary
- Interventions
- sildenafil
- Drug
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 40 Years to 85 Years
- Enrollment
- 29 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2009
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- Neonatal Encephalopathy
- Interventions
- Sildenafil, Ora-Blend
- Drug
- Lead sponsor
- Pia Wintermark
- Other
- Eligibility
- 0 Minutes to 48 Hours
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2031
- U.S. locations
- 1
- States / cities
- Denver, Colorado
- Conditions
- Healthy Volunteers
- Interventions
- Viagra 50 mg tablet, Formulation B ODT tablet 50 mg, Formulation C ODT tablet 50 mg, Formulation D ODT tablet 50 mg
- Drug
- Lead sponsor
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- Industry
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 16 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- 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
- Conditions
- Congestive Heart Failure
- Interventions
- sildenafil
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2001 – 2006
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Hypoactive Sexual Desire Disorder
- Interventions
- Placebo, Sildenafil, Testosterone
- Drug
- Lead sponsor
- Emotional Brain NY Inc.
- Industry
- Eligibility
- 21 Years to 70 Years · Female only
- Enrollment
- 196 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- Started 2011
- U.S. locations
- 14
- States / cities
- San Diego, California • Washington D.C., District of Columbia • Brooksville, Florida + 11 more
- Conditions
- Prostate Cancer, Erectile Dysfunction
- Interventions
- sildenafil citrate and questionaires, placebo tablets and questionaires
- Drug
- Lead sponsor
- Memorial Sloan Kettering Cancer Center
- Other
- Eligibility
- Male only
- Enrollment
- 290 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2014
- U.S. locations
- 5
- States / cities
- Basking Ridge, New Jersey • Commack, New York • New York, New York + 2 more
- Conditions
- Erectile Dysfunction, Diabetes Mellitus, Type 2
- Interventions
- sildenafil, placebo
- Drug
- Lead sponsor
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- Industry
- Eligibility
- 35 Years to 70 Years · Male only
- Enrollment
- 300 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2004
- U.S. locations
- 28
- States / cities
- Huntsville, Alabama • Phoenix, Arizona • Beverly Hills, California + 21 more
- Conditions
- Pulmonary Arterial Hypertension
- Interventions
- Imatinib, Sildenafil, Bosentan
- Drug
- Lead sponsor
- Novartis Pharmaceuticals
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 21 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2012
- U.S. locations
- 3
- States / cities
- Tampa, Florida • Weston, Florida • Mineola, New York
- Conditions
- NAFLD
- Interventions
- Leu-Met-Sil 0.5, Leu-Met-Sil 1.0, Placebo
- Drug
- Lead sponsor
- NuSirt Biopharma
- Industry
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 91 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 13
- States / cities
- Chino, California • San Diego, California • Wheat Ridge, Colorado + 10 more
- Conditions
- Nephrogenic Diabetes Insipidus
- Interventions
- sildenafil, calcitonin, hydrochlorothiazide/amiloride, indomethacin, Placebo for sildenafil, placebo for calcitonin
- Drug
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 5 Years to 25 Years · Male only
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2012
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Hypertension, Pulmonary
- Interventions
- sildenafil, placebo
- Drug
- Lead sponsor
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 275 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2003
- U.S. locations
- 24
- States / cities
- Birmingham, Alabama • La Jolla, California • Los Angeles, California + 15 more
- Conditions
- Duchenne Muscular Dystrophy, Becker Muscular Dystrophy
- Interventions
- Sildenafil
- Drug
- Lead sponsor
- Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
- Other
- Eligibility
- 18 Years to 50 Years · Male only
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- 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
- Conditions
- None Volunteer
- Interventions
- sildenafil
- Drug
- Lead sponsor
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- Industry
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 4 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008
- U.S. locations
- 1
- States / cities
- Cambridge, Massachusetts
- Conditions
- Erectile Dysfunction
- Interventions
- TA-1790, Sildenafil citrate, Placebo, Nitrostat
- Drug
- Lead sponsor
- VIVUS LLC
- Industry
- Eligibility
- 30 Years to 60 Years · Male only
- Enrollment
- 106 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004
- U.S. locations
- 1
- States / cities
- Phoenix, Arizona
- Conditions
- Cystic Fibrosis
- Interventions
- sildenafil, placebo
- Drug
- Lead sponsor
- National Jewish Health
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 14 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Denver, Colorado
- Conditions
- Emphysema
- Interventions
- Sildenafil 20 MG, Placebo Oral Tablet, Pulse wave velocity, Carotid artery compliance and stiffness, Pressure wave reflection
- Drug · Diagnostic Test
- Lead sponsor
- Eric A. Hoffman
- Other
- Eligibility
- 21 Years to 65 Years
- Enrollment
- 162 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2024
- U.S. locations
- 1
- States / cities
- Iowa City, Iowa
- Conditions
- Pulmonary Arterial Hypertension
- Interventions
- Not listed
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- Conditions
- Idiopathic Pulmonary Fibrosis, Pulmonary Fibrosis
- Interventions
- Sildenafil, Losartan, Sildenafil and Losartan, Placebo Oral Tablet
- Drug
- Lead sponsor
- Alicia Gerke
- Other
- Eligibility
- 18 Years to 99 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2016
- U.S. locations
- 1
- States / cities
- Iowa City, Iowa
- Conditions
- Erectile Dysfunction
- Interventions
- Sildenafil Cream, Placebo Cream, Penile Plethysmography (RigiScan)
- Drug · Device
- Lead sponsor
- Strategic Science & Technologies, LLC
- Industry
- Eligibility
- 18 Years to 70 Years · Male only
- Enrollment
- 33 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 3
- States / cities
- San Diego, California • New Orleans, Louisiana • New York, New York
- Conditions
- Congenital Disorders
- Interventions
- Not listed
- Lead sponsor
- Children's Healthcare of Atlanta
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 48 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1996 – 2008
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Impotence
- Interventions
- Viagra (Sildenafil Citrate) 100 mg
- Drug
- Lead sponsor
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
- Industry
- Eligibility
- 18 Years to 70 Years · Male only
- Enrollment
- 250 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2006
- U.S. locations
- 25
- States / cities
- Birmingham, Alabama • Homewood, Alabama • Hoover, Alabama + 22 more