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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Tadalafil Clear all
Completed Early Phase 1 Interventional

Tadalafil and Sildenafil for Duchenne Muscular Dystrophy

NCT01359670
View directory record Official record
Conditions
Duchenne Muscular Dystrophy
Interventions
Tadalafil, Sildenafil
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
7 Years to 15 Years · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2020 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 3 Interventional Results available

A Study of Tadalafil in Pediatric Participants With Pulmonary Arterial Hypertension (PAH)

NCT01824290
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
Tadalafil, Placebo, ERA as specific PAH treatment
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
6 Months to 17 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
7
States / cities
Atlanta, Georgia • Detroit, Michigan • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Tadalafil in Subjects With Erectile Dysfunction Caused by Spinal Cord Injury

NCT00421083
View directory record Official record
Conditions
Erectile Dysfunction, Spinal Cord Injuries
Interventions
tadalafil
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Male only
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 24, 2007 · Synced Sep 23, 2026, 5:02 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 23, 2013 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Bioavailability Study of LY2452473 and Tadalafil

NCT01401543
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
LY2452473, Tadalafil, LY900010
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Sep 23, 2026, 5:02 PM 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 13, 2020 · Synced Sep 23, 2026, 5:02 PM 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 16, 2019 · Synced Sep 23, 2026, 5:02 PM 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 11, 2018 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

PDE5 Inhibition for Obesity-Related Cardiometabolic Dysfunction

NCT02819440
View directory record Official record
Conditions
Healthy, Obese
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
21 Years to 50 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 26, 2022 · Synced Sep 23, 2026, 5:02 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Hezkue®, Hezkue Turbo®, and Commercial Sildenafil Products in Fed Healthy Male Subject

NCT07117383
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
ASP-001.1, ASP-001, Commercial Sildenafil and Sildenafil/Tadalafil Products
Device · Drug
Lead sponsor
Aspargo Labs, Inc
Industry
Eligibility
18 Years to 70 Years · Male only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Tadalafil and Nesiritide as Therapy in Pre-clinical Heart Failure

NCT01544998
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Nesiritide, Tadalafil, Placebo, Saline load
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years to 90 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 21, 2018 · Synced Sep 23, 2026, 5:02 PM EDT
Withdrawn No phase listed Observational

Use of a Phosphodiesterase Type 5 Inhibitor to Improve Anabolic Resistance in Older Adults

NCT05458232
View directory record Official record
Conditions
Sarcopenia
Interventions
Tadalafil 5mg
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
60 Years to 75 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2024 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 2 Interventional Results available

Effects of Tadalafil Once a Day for 12 Weeks in Men With Signs and Symptoms of Benign Prostatic Hyperplasia

NCT00386009
View directory record Official record
Conditions
Benign Prostatic Hyperplasia
Interventions
Tadalafil, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
40 Years and older · Male only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
8
States / cities
Newport Beach, California • Tarzana, California • Middlebury, Connecticut + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2009 · Synced Sep 23, 2026, 5:02 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Hookah Smoking, Carbon Monoxide, and Coronary Endothelial Function

NCT03166787
View directory record Official record
Conditions
Smoking, Endothelial Dysfunction
Interventions
Charcoal hookah, E-coal hookah, Cigarette, Carbon Monoxide inhalation, Room Air inhalation, vitamin C, tadalafil
Other · Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
21 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Sep 23, 2026, 5:02 PM 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 25, 2021 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of LY2623091 in Healthy Participants

NCT02300259
View directory record Official record
Conditions
Healthy Volunteers
Interventions
LY2623091, Itraconazole, Simvastatin, Tadalafil, Diltiazem
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2020 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Early Phase 1 Interventional

Window of Opportunity Trial of Nivolumab and Tadalafil in Patients With Squamous Cell Carcinoma of the Head and Neck

NCT03238365
View directory record Official record
Conditions
Lip, Oral Cavity and Pharynx, Larynx
Interventions
Nivolumab, Tadalafil, Therapeutic Conventional Surgery
Biological · Drug · Procedure
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Sep 23, 2026, 5:02 PM EDT
Withdrawn Phase 2 Interventional

Tadalafil for Treatment of Priapism in Men With Sickle Cell Anemia

NCT00538564
View directory record Official record
Conditions
Sickle Cell Anemia, Priapism
Interventions
tadalafil, placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 20, 2016 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Pharmacokinetics Study for Pediatric Participants With Pulmonary Arterial Hypertension

NCT01484431
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Tadalafil- Tablet or Oral suspension
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
6 Months to 17 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
5
States / cities
Aurora, Colorado • Atlanta, Georgia • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2019 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 4 Interventional Results available

Study of Add-on Ambrisentan Therapy to Background Phosphodiesterase Type-5 Inhibitor (PDE5i) Therapy in Pulmonary Arterial Hypertension (ATHENA-1)

NCT00617305
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Ambrisentan, Placebo, Sildenafil, Tadalafil
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
16 Years to 75 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
30
States / cities
Mobile, Alabama • Phoenix, Arizona • Los Angeles, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2012 · Synced Sep 23, 2026, 5:02 PM 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 10, 2021 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Phase 4 Interventional

Trial of Tadalafil, Tamsulosin and Combination for Access Sheath Deployment

NCT03229889
View directory record Official record
Conditions
Nephrolithiasis
Interventions
Cialis 5Mg Tablet, Flomax 0.4Mg Capsule, Cialis + Flomax, Placebo
Drug · Combination Product
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 99 Years
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 23, 2026, 5:02 PM EDT
Completed Not applicable Interventional Results available

Tadalafil in Treating Patients Undergoing Surgery for Cancer of the Oral Cavity or Oropharynx

NCT00843635
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Tadalafil, Placebo
Drug · Other
Lead sponsor
Donald T. Weed
Other
Eligibility
18 Years to 120 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 18, 2015 · Synced Sep 23, 2026, 5:02 PM 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 17, 2010 · Synced Sep 23, 2026, 5:02 PM EDT