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Showing 1–24 of 43 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo for testosterone gel Clear all
Completed Phase 4 Interventional

Effect of Testosterone Replacement on Insulin Resistance

NCT00487734
View directory record Official record
Conditions
Metabolic Syndrome, Hypogonadism
Interventions
Testosterone gel, Placebo for testosterone gel
Radiation · Drug
Lead sponsor
McGuire Research Institute
Other
Eligibility
20 Years to 65 Years · Male only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 22, 2012 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Testosterone Gel Applied to Women With Pituitary Gland Problems

NCT00144391
View directory record Official record
Conditions
Panhypopituitarism
Interventions
Transdermal Testosterone gel
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 26, 2017 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional

Safety and Efficacy of LibiGel® for Treatment of Hypoactive Sexual Desire Disorder in Postmenopausal Women

NCT00612742
View directory record Official record
Conditions
Hypoactive Sexual Desire Disorder
Interventions
testosterone gel, placebo gel
Drug
Lead sponsor
BioSante Pharmaceuticals
Industry
Eligibility
50 Years and older · Female only
Enrollment
3,656 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
141
States / cities
Birmingham, Alabama • Hoover, Alabama • Huntsville, Alabama + 116 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Sep 25, 2026, 2:51 PM EDT
Active, not recruiting Phase 2 Interventional

Improving Cancer-related Fatigue, Sexual Dysfunction and Quality of Life in Older Men With Cancer and Androgen Deficiency

NCT04301765
View directory record Official record
Conditions
Hypogonadism, Male, Cancer, Fatigue
Interventions
testosterone 1.62% gel, placebo gel
Drug · Other
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
55 Years and older · Male only
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
3
States / cities
Augusta, Georgia • Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 25, 2026, 2:51 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Prevention of Recurrent UTI Using Vaginal Testosterone Versus Placebo Placebo

NCT04807894
View directory record Official record
Conditions
Recurrent Urinary Tract Infection, Vaginal Atrophy, Postmenopausal Disorder
Interventions
Vaginal Cream with Applicator
Drug
Lead sponsor
Jefferson Drapkin
Other
Eligibility
60 Years to 90 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Not applicable Interventional Results available

Study of Psychological and Motor Effects of Testosterone in Adolescents With XXY/Klinefelter Syndrome

NCT01585831
View directory record Official record
Conditions
Klinefelter Syndrome, XXY Syndrome
Interventions
Testosterone gel 1%, Placebo gel
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
8 Years to 18 Years · Male only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

PROS-1-Male Hormonal Contraceptive Regimens on Prostate Tissue

NCT00490555
View directory record Official record
Conditions
Healthy
Interventions
Testosterone gel, Dutasteride, Depo-Medroxyprogesterone (DMPA), Placebo Testosterone gel, Placebo dutasteride, Placebo DMPA
Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
25 Years to 55 Years · Male only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 14, 2013 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 4 Interventional Results available

Neuroendocrine Dysfunction in Traumatic Brain Injury: Effects of Testosterone Therapy

NCT01201863
View directory record Official record
Conditions
Endocrine Dysfunction, Trauma, Brain Injury
Interventions
Androgel (Testosterone Gel), Placebo gel
Drug · Other
Lead sponsor
Craig Hospital
Other
Eligibility
16 Years to 65 Years · Male only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Dihydrotestosterone (DHT) on Prostate Tissue [Short Title: DHT-3]

NCT00490022
View directory record Official record
Conditions
Healthy
Interventions
Dihydrotestosterone (DHT) gel (0.7%), Placebo gel
Drug
Lead sponsor
University of Washington
Other
Eligibility
35 Years to 55 Years · Male only
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 26, 2011 · Synced Sep 25, 2026, 2:51 PM EDT
Terminated Phase 2 Interventional Results available

Maintaining Suppression of Testosterone With Transdermal Estradiol Gel

NCT02349386
View directory record Official record
Conditions
Cancer of the Prostate
Interventions
BHR-200 (0.36% transdermal 17β-estradiol gel), Placebo
Drug
Lead sponsor
BHR Pharma, LLC
Industry
Eligibility
18 Years and older · Male only
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
12
States / cities
Tucson, Arizona • Aventura, Florida • Daytona Beach, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2022 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

ITT4 Intratesticular Hormonal Milieu in Man (ITT4)

NCT01215292
View directory record Official record
Conditions
Healthy Males
Interventions
Acyline, Testosterone gel, ketoconazole 400, Ketoconazole 800, Dutasteride, Anastrozole, Placebo ketoconazole
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 30, 2014 · Synced Sep 25, 2026, 2:51 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Natesto Testosterone Nasal Gel for Hypogonadal Men

NCT05484167
View directory record Official record
Conditions
Erectile Dysfunction, Sexual Dysfunction
Interventions
Natesto Nasal Product, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 64 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

PROS-2 Dose Response Effects of Exogenous Testosterone on the Prostate

NCT01327495
View directory record Official record
Conditions
Healthy
Interventions
placebo acyline, placebo gel, Testosterone 1% gel 1.25 g, Testosterone 1% gel 2.5 g, Testosterone 1% gel 5.0 g, testosterone 1% gel 10 g, testosterone 1% gel 15 g, Acyline
Other · Drug
Lead sponsor
University of Washington
Other
Eligibility
25 Years to 55 Years · Male only
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 4, 2017 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional Results available

Starting a Testosterone and Exercise Program After Hip Injury

NCT02938923
View directory record Official record
Conditions
Hip Fracture, Frailty, Sarcopenia
Interventions
Testosterone, Placebo gel, Supervised exercise training, Home exercise program, Health Education Modules
Drug · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
65 Years and older · Female only
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
8
States / cities
Aurora, Colorado • Farmington, Connecticut • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional Results available

Prasterone (Dehydroepiandrosterone) in Treating Postmenopausal Cancer Survivors With Vaginal Symptoms

NCT01376349
View directory record Official record
Conditions
Breast Cancer, Gynecologic Cancer
Interventions
prasterone, placebo
Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Female only
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
280
States / cities
Scottsdale, Arizona • Aurora, Colorado • Boulder, Colorado + 185 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Influence of Testosterone Administration on Drug-Induced QT Interval Prolongation and Torsades de Pointes

NCT02513940
View directory record Official record
Conditions
Long QT Syndrome
Interventions
Testosterone, Progesterone, Placebo, Ibutilide
Drug
Lead sponsor
Indiana University
Other
Eligibility
65 Years and older · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Hormonal Mechanisms of Sleep Restriction

NCT02256865
View directory record Official record
Conditions
Insulin Resistance
Interventions
Ketoconazole, Hydrocortisone, Testosterone, Placebo for ketoconazole, Placebo for hydrocortisone, Placebo for testosterone
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
22 Years to 45 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2023
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Sep 25, 2026, 2:51 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

ITT-5 Mechanisms of Spermatogenesis in Man

NCT02147964
View directory record Official record
Conditions
Gonadotropin Deficiency
Interventions
Testosterone 1% Gel, Acyline, Dutasteride, Ketoconazole, HCG, placebo dutasteride, placebo ketoconazole
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 55 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional

Safety and Efficacy of LibiGel® for Treatment of Hypoactive Sexual Desire Disorder in Surgically Menopausal Women

NCT00657501
View directory record Official record
Conditions
Hypoactive Sexual Desire Disorder
Interventions
testosterone gel, placebo gel
Drug
Lead sponsor
BioSante Pharmaceuticals
Industry
Eligibility
30 Years to 65 Years · Female only
Enrollment
575 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
66
States / cities
Mobile, Alabama • Chandler, Arizona • Glendale, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2013 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

The Testosterone Trials in Older Men

NCT00799617
View directory record Official record
Conditions
Andropause
Interventions
AndroGel® (testosterone gel), Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
65 Years and older · Male only
Enrollment
790 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2018
U.S. locations
12
States / cities
Birmingham, Alabama • La Jolla, California • Torrance, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2019 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Novel Approaches for Minimizing Drug-Induced QT Interval Lengthening

NCT04675788
View directory record Official record
Conditions
Long QT Syndrome, Abnormalities, Drug-Induced
Interventions
Progesterone, Ibutilide, Testosterone, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
50 Years to 99 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
3
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Aromatase Inhibition Versus Testosterone in Older Men With Low Testosterone: Randomized-Controlled Trial.

NCT00104572
View directory record Official record
Conditions
Hypogonadism, Diabetes, Sarcopenia, Osteoporosis, Depression
Interventions
Androgel (Testosterone Gel), Anastrozole (Aromatase Inhibitor), Placebo tablet, Placebo gel, Calcium Cardone 500mg with vitamin D 400 IU
Drug · Dietary Supplement
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
65 Years and older · Male only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Sep 25, 2026, 2:51 PM EDT
Not listed Phase 1Phase 2 Interventional

TRT in Combination With Electrical Stimulation and Standing: Effect on Muscle and Bone in Spinal Cord Injured Males

NCT02317640
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Testosterone Gel applied by a pump, Stand Training, Electrical Stimulation
Drug · Other · Device
Lead sponsor
Kessler Foundation
Other
Eligibility
18 Years to 58 Years · Male only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Sep 25, 2026, 2:51 PM EDT
Completed Phase 3 Interventional Results available

Lifestyle Intervention and Testosterone Replacement in Obese Seniors

NCT02367105
View directory record Official record
Conditions
Obesity and Hypogonadism
Interventions
Testosterone, Lifestyle Therapy, Placebo
Drug · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
65 Years to 85 Years · Male only
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 25, 2022 · Synced Sep 25, 2026, 2:51 PM EDT