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ClinicalTrials.gov public records Last synced Oct 2, 2026, 5:59 AM EDT

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Showing 25–41 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Tadalafil 20 MG Clear all
Completed Phase 1 Interventional

Tadalafil to Overcome Immunosuppression During Chemoradiotherapy for IDH-wildtype Grade III-IV Astrocytoma

NCT04757662
View directory record Official record
Conditions
Grade III Astrocytoma, Grade IV Astrocytoma, Astrocytoma, Grade IV, Astrocytoma, Grade III
Interventions
Tadalafil
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 13, 2023 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 3 Interventional

To Determine How Different Doses of Tadalafil Work on Getting and Keeping an Erection 26 or 36 Hours After Taking

NCT00547508
View directory record Official record
Conditions
Impotence
Interventions
tadalafil, placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Male only
Enrollment
485 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 22, 2007 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 4 Interventional Results available

Riociguat rEplacing PDE-5i Therapy evaLuated Against Continued PDE-5i thErapy

NCT02891850
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Riociguat (Adempas, BAY63-2521), Sildenafil, Tadalafil
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 75 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
17
States / cities
Phoenix, Arizona • Tucson, Arizona • Sacramento, California + 14 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2021 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 3 Interventional Results available

The Efficacy and Safety of Initial Triple Versus Initial Dual Oral Combination Therapy in Patients With Newly Diagnosed Pulmonary Arterial Hypertension

NCT02558231
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Macitentan, Tadalafil, Selexipag
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years to 75 Years
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
20
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 2 Interventional Results available

A Phase II Trial of Tadalafil in Patients With Squamous Cell Carcinoma of the Upper Aero Digestive Tract

NCT01697800
View directory record Official record
Conditions
Head and Neck Squamous Cell Carcinoma
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
21 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 28, 2020 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Study to Determine How Cialis Effects the Renal Function in Response to Volume Expansion in Preclinical Systolic Cardiomyopathy (Aim2)

NCT01970176
View directory record Official record
Conditions
Cardiomyopathy, Renal Impairment
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 11, 2021 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 2 Interventional Results available

Study of CRS-207, Pembrolizumab, Ipilimumab, and Tadalafil in Metastatic Pancreatic Cancer

NCT05014776
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Tadalafil, Pembrolizumab, Ipilimumab, CRS-207
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 3 Interventional

To Determine Effect and Safety of Tadalafil Taken by Men of Different Races and With Different Diseases When Needed for Erections

NCT00547417
View directory record Official record
Conditions
Impotence
Interventions
tadalafil
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Male only
Enrollment
1,933 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 22, 2007 · Synced Oct 2, 2026, 5:59 AM EDT
Active, not recruiting Phase 2 Interventional

Tadalafil Effect + Chemotherapy in Resectable Gastric/GEJ Cancer

NCT05709574
View directory record Official record
Conditions
Gastric Adenocarcinoma, Gastroesophageal Junction Adenocarcinoma
Interventions
Tadalafil 20 MG
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 2, 2026, 5:59 AM EDT
Terminated Phase 4 Interventional Results available

Aortic Stenosis and PhosphodiEsterase iNhibition With Aortic Valve Replacement (ASPEN-AVR): A Pilot Study

NCT01272388
View directory record Official record
Conditions
Aortic Stenosis
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Oct 2, 2026, 5:59 AM EDT
Withdrawn Phase 3 Interventional

Phosphodiesterase Type 5 Inhibition With Tadalafil Changes Outcomes in Heart Failure: Extent of Renal Damage

NCT01960153
View directory record Official record
Conditions
Heart Failure, Pulmonary Hypertension
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 2, 2026, 5:59 AM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

The Study of Skeletal Muscle Blood Flow in Becker Muscular Dystrophy

NCT02653833
View directory record Official record
Conditions
Muscular Dystrophy
Interventions
Tadalafil 20 MG, beetroot juice extract
Drug · Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 14, 2020 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 1 Interventional

PDE5 Inhibition Via Tadalafil to Enhance Anti-Tumor Mucin 1 (MUC1) Vaccine Efficacy in Patients With HNSCC

NCT02544880
View directory record Official record
Conditions
Head and Neck Squamous Cell Carcinoma, Head and Neck Cancer
Interventions
Tadalafil, Anti-MUC1 Vaccine, Anti-Influenza Vaccine, Tadalafil Placebo, Anti-MUC1 Vaccine Placebo, Standard of Care Treatment, Anti-Influenza Vaccine Placebo
Drug · Biological · Other
Lead sponsor
Donald T. Weed, MD, FACS
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Oct 2, 2026, 5:59 AM EDT
Withdrawn Phase 4 Interventional

Efficacy and Safety of Combination Ambrisentan and Tadalafil in Patients With Portopulmonary Hypertension

NCT03309592
View directory record Official record
Conditions
Portopulmonary Hypertension, Pulmonary Hypertension, Cirrhosis, Liver
Interventions
Ambrisentan Pill, Tadalafil Pill
Drug
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 7, 2018 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 4 Interventional Results available

A 48-week Study of the Effect of Dual Therapy (Inhaled Treprostinil and Tadafafil) Versus Monotherapy (Tadalafil).

NCT01305252
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
treprostinil inhalations, tadalafil
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 69 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Stanford, California • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 2, 2017 · Synced Oct 2, 2026, 5:59 AM EDT
Terminated Phase 4 Interventional Results available

Aortic Stenosis and PhosphodiEsterase Type 5 iNhibition (ASPEN): A Pilot Study

NCT01275339
View directory record Official record
Conditions
Aortic Stenosis, LV Remodeling, Hypertrophy
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 17, 2019 · Synced Oct 2, 2026, 5:59 AM EDT
Completed Phase 3 Interventional Results available

A Study for Patients With Erectile Dysfunction to Test Whether Tadalafil Taken Once a Day Can Better Improve Psychological Outcomes.

NCT00734604
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
tadalafil once a day [T(OaD)], sildenafil citrate as needed [S(PRN)], tadalafil as needed [T(PRN)]
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Male only
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
7
States / cities
Huntsville, Alabama • Newport Beach, California • Middlebury, Connecticut + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2010 · Synced Oct 2, 2026, 5:59 AM EDT