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ClinicalTrials.gov public records Last synced Oct 3, 2026, 5:38 PM EDT

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Showing 25–39 of 39 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo (lactose pill) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Strengthening Circadian Signals

NCT03490864
View directory record Official record
Conditions
Improving Cardiometabolic Outcomes in Adults
Interventions
Melatonin 1 mg, Placebos, Meal Timing, NON Meal Timing
Dietary Supplement · Other
Lead sponsor
Northwestern University
Other
Eligibility
35 Years to 54 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 3, 2026, 5:38 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Methylphenidate for the Treatment of Epilepsy-related Cognitive Deficits

NCT04419272
View directory record Official record
Conditions
Epilepsy
Interventions
Methylphenidate, Placebo
Drug · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
226 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effects of BCRP Q141K on Allopurinol Pharmacokinetics and Dynamics

NCT02956278
View directory record Official record
Conditions
Chronic Gout, Hyperuricemia
Interventions
Allopurinol, Placebo
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 40 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2020 · Synced Oct 3, 2026, 5:38 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Post Operative Continuous Active Combination Sex Steroids for the Prevention of Recurrent Endometrioma Formation

NCT00999479
View directory record Official record
Conditions
Endometrioma
Interventions
Norethindrone acetate and ethinyl estradiol tablets, USP, ferrous fumarate (placebo) tablets
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 10, 2013 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 2 Interventional

Phase II Trial of Silymarin for Patients With Chronic Hepatitis C Who Have Failed Conventional Antiviral Treatment

NCT00680342
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Silymarin, Placebo
Drug · Other
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
5
States / cities
Boston, Massachusetts • Chapel Hill, North Carolina • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2013 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effectiveness of N-acetylcysteine in Treating Cocaine Dependent Individuals - 1

NCT00136825
View directory record Official record
Conditions
Cocaine-Related Disorders
Interventions
N-Acetylcysteine, Placebo
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 45 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Oct 3, 2026, 5:38 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Melatonin and Ulcerative Colitis: A Pilot Clinical Trial

NCT00790478
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
Melatonin, Placebo
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 69 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 12, 2021 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Investigation of the Role of Steroids in Enhancing Voice Therapy Outcomes

NCT02286960
View directory record Official record
Conditions
Dysphonia
Interventions
Steroid, Lactose Pills
Drug · Dietary Supplement
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Psilocybin on Behavior, Psychology and Brain Function in Long-term Meditators

NCT02145091
View directory record Official record
Conditions
Healthy
Interventions
Moderately-high dose of psilocybin, Moderately-low dose of psilocybin, Very-low dose of psilocybin, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
25 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 30, 2019 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Phase 2 Interventional Results available

MDMA-Assisted Psychotherapy in People With Posttraumatic Stress Disorder

NCT00090064
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Midomafetamine HCl, Lactose placebo pill, Therapy
Drug · Behavioral
Lead sponsor
Resilient Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Mt. Pleasant, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 6, 2025 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Evaluation of Rosiglitazone Anti-inflammatory Effect With FDG-PET Imaging

NCT01174056
View directory record Official record
Conditions
Lung Inflammation
Interventions
Zileuton, Pioglitazone placebo, Zileuton placebo, Pioglitazone
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
19 Years to 44 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Oct 3, 2026, 5:38 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Effect of Neural Constraints on Movement in Stroke

NCT06666673
View directory record Official record
Conditions
Stroke
Interventions
Tizanidine, Placebo
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 3, 2026, 5:38 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Melatonin and Salt on Blood Vessel Function

NCT04325191
View directory record Official record
Conditions
Cardiovascular Risk Factor
Interventions
Melatonin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 3, 2026, 5:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Steroids on Thrombosis (Blood Clot Formation) and Inflammation in Patients Undergoing Hip Surgery

NCT01782859
View directory record Official record
Conditions
Total Hip Replacement
Interventions
Prednisone, Hydrocortisone, Placebo (for Prednisone)
Drug
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
50 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 5, 2017 · Synced Oct 3, 2026, 5:38 PM EDT
Withdrawn Phase 4 Interventional

Double Blind Randomized Placebo Controlled Trial of Natrecor in Acute Decompensated Heart Failure With Normal EF

NCT00505791
View directory record Official record
Conditions
Heart Failure, Congestive, Dyspnea, Pulmonary Edema
Interventions
Nesiritide
Drug
Lead sponsor
University of Medicine and Dentistry of New Jersey
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 11, 2015 · Synced Oct 3, 2026, 5:38 PM EDT