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ClinicalTrials.gov public records Last synced Oct 8, 2026, 9:57 AM EDT

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Showing 73–96 of 850 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo capsules twice a day Clear all
Completed Phase 3 Interventional Results available

BG00012 Monotherapy Safety and Efficacy Extension Study in Multiple Sclerosis (MS)

NCT00835770
View directory record Official record
Conditions
Relapsing-Remitting Multiple Sclerosis
Interventions
dimethyl fumarate, Placebo
Drug
Lead sponsor
Biogen
Industry
Eligibility
19 Years to 58 Years
Enrollment
1,736 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2019
U.S. locations
50
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mesa, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Dec 31, 2020 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Early Phase 1 Interventional

Endocannabinoids, Stress, Craving And Pain Effects Study

NCT05480072
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Palmitoylethanolamide, Placebo
Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of 31P MRS to Assess Brain NAD+ in Healthy Current and Former Collegiate Athletes

NCT02721537
View directory record Official record
Conditions
Concussion, Mild
Interventions
Nicotinamide Riboside, Matching placebo
Dietary Supplement · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
2
States / cities
Minneapolis, Minnesota • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Oct 8, 2026, 9:57 AM EDT
Recruiting Phase 4 Interventional

Ovarian Hormone Withdrawal, Anhedonia, and Reward Sensitivity in Women With Premenstrual Exacerbations of Depression

NCT06610305
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Transdermal estradiol, Progesterone, Transdermal placebo patch, placebo capsule
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 3 Interventional Results available

Placebo-controlled Safety and Efficacy Study of Pregabalin in Subjects With Post-traumatic Peripheral Neuropathic Pain

NCT01701362
View directory record Official record
Conditions
Neuropathic Pain
Interventions
pregabalin, placebo
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older
Enrollment
542 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
105
States / cities
Huntsville, Alabama • Goodyear, Arizona • Phoenix, Arizona + 70 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2021 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Multiple Rising Oral Dose Study of PG 760564 Administered Twice Daily to Healthy Male/Female Volunteers for 14 Days

NCT00791388
View directory record Official record
Conditions
Healthy
Interventions
Placebo, PG-760564
Drug
Lead sponsor
Procter and Gamble
Industry
Eligibility
18 Years to 45 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 4, 2011 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Analgesic Efficacy and Safety of V120083 in Subjects With Osteoarthritis (OA) of the Knee

NCT03028870
View directory record Official record
Conditions
Osteo Arthritis Knee
Interventions
V120083, Naproxen, Placebo
Drug
Lead sponsor
Purdue Pharma LP
Industry
Eligibility
40 Years to 80 Years
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
30
States / cities
Birmingham, Alabama • Tuscumbia, Alabama • North Hollywood, California + 24 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2019 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Influence of n-Acetylcysteine Maintenance on Alcohol Effects

NCT03216954
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Alcohol, Placebos, N-acetyl cysteine
Drug
Lead sponsor
William Stoops
Other
Eligibility
21 Years to 55 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 3 Interventional Results available

A Trial to Investigate Recovery From COVID-19 With C21 in Adult Subjects

NCT04880642
View directory record Official record
Conditions
COVID-19
Interventions
C21, Placebo
Drug
Lead sponsor
Vicore Pharma AB
Industry
Eligibility
18 Years and older
Enrollment
272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
6
States / cities
Orange, California • Winfield, Illinois • Fort Wayne, Indiana + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Oct 8, 2026, 9:57 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy and Safety of an Essential Oil-Based Product System for Immune Support

NCT07482644
View directory record Official record
Conditions
Healthy
Interventions
Essential Oil Blend (Botanical Combination Product), Placebo
Other
Lead sponsor
dōTERRA International
Industry
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Pleasant Grove, Utah
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2Phase 3 Interventional Results available

GAIN Trial: Phase 2/3 Study of COR388 in Subjects With Alzheimer's Disease

NCT03823404
View directory record Official record
Conditions
Alzheimer Disease
Interventions
COR388 capsule, Placebo capsule
Drug
Lead sponsor
Cortexyme Inc.
Industry
Eligibility
55 Years to 80 Years
Enrollment
643 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
58
States / cities
Phoenix, Arizona • Sun City, Arizona • Costa Mesa, California + 48 more
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Curcumin as a Novel Treatment to Improve Cognitive Dysfunction in Schizophrenia

NCT02104752
View directory record Official record
Conditions
Schizophrenia, Cognition, Psychosis
Interventions
Curcumin, Placebo
Drug
Lead sponsor
VA Greater Los Angeles Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Oct 8, 2026, 9:57 AM EDT
Withdrawn Phase 1 Interventional

Efficacy of Combination Therapy vs Placebo for Pediatric Functional Abdominal Pain

NCT01269671
View directory record Official record
Conditions
Functional Abdominal Pain, Irritable Bowel Syndrome, Functional Dyspepsia
Interventions
Melatonin, Peppermint Oil (mentharil), and Simethicone, Sugar pill
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
8 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 24, 2015 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 4 Interventional Results available

Brain Aging and Treatment Response in Geriatric Depression

NCT01902004
View directory record Official record
Conditions
Mild Cognitive Impairment (MCI), Depression
Interventions
Escitalopram, Memantine, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
60 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 15, 2019 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional

Safety and Efficacy Study of GRT6005 in Patients With Osteoarthritis (OA) Knee Pain

NCT01709214
View directory record Official record
Conditions
Moderate to Severe Chronic Pain Due to Osteoarthritis of the Knee
Interventions
Cebranopadol (GRT6005) Low-Dose Range, Cebranopadol (GRT6005) High-Dose Range, Placebo, Oxycodone CR
Drug
Lead sponsor
Tris Pharma, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
619 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
83
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 74 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2021 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 3 Interventional Results available

Twice-daily Oral Direct Thrombin Inhibitor Dabigatran Etexilate in the Long Term Prevention of Recurrent Symptomatic VTE

NCT00558259
View directory record Official record
Conditions
Venous Thromboembolism
Interventions
dabigatran etexilate 150 mg twice daily (BID), matching placebo twice daily (BID)
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
1,353 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
21
States / cities
Birmingham, Alabama • Huntsville, Alabama • Laguna Hills, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2014 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional

A Study of Response-Guided Duration of Combination Therapy With GS-9451, Pegasys® and Copegus® With and Without Tegobuvir (GS-9190) in Previously Untreated Subjects With Genotype 1 Chronic Hepatitis C

NCT01271790
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Tegobuvir (GS-9190), GS-9451, Pegasys®, Copegus®, Tegobuvir placebo, GS-9451 placebo
Drug · Biological
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
85
States / cities
Dothan, Alabama • Montgomery, Alabama • Phoenix, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Fish Oils and Adipose Inflammation Reduction

NCT02010359
View directory record Official record
Conditions
Obesity
Interventions
Lovaza, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
25 Years to 50 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 12, 2019 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ashwagandha Extract for Weight and Stress Management in Overweight and Obese Adults

NCT07215455
View directory record Official record
Conditions
Weight Management, Stress
Interventions
Ashwagandha 300 mg standardized root extract, Identical placebo capsule.
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
19 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2025 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 4 Interventional Results available

Effect of Perimenstrual Ovarian Steroid Supplementation on Perimenstrual Suicidality

NCT03720847
View directory record Official record
Conditions
Suicidal Ideation
Interventions
Estradiol Transdermal Patch 0.1 mg/24 hrs, Oral Micronized Progesterone, Inactive Clear Patch, Placebo capsule
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional Results available

AZD7268 Safety and Tolerability Study

NCT01020799
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
AZD7268, Escitalopram, Placebo capsules, Placebo tablets
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
17
States / cities
Birmingham, Alabama • Garden Grove, California • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional

EC-18 for Oral Mucositis in Patients With Concomitant Chemoirradiation

NCT03200340
View directory record Official record
Conditions
Stomatitis
Interventions
EC-18, Placebo
Drug
Lead sponsor
Enzychem Lifesciences Corporation
Industry
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
20
States / cities
Long Beach, California • Los Angeles, California • Miami, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 2 Interventional Results available

GB002 in Adult Subjects With Pulmonary Arterial Hypertension (PAH)

NCT04456998
View directory record Official record
Conditions
Pulmonary Artery Hypertension
Interventions
GB002 (seralutinib), Placebo, Generic Dry Powder Inhaler
Drug · Device
Lead sponsor
GB002, Inc., a wholly owned subsidiary of Gossamer Bio, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
36
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 31 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2023 · Synced Oct 8, 2026, 9:57 AM EDT
Completed Phase 1Phase 2 Interventional Results available

S-Equol in Alzheimer's Disease 2 Trial

NCT03101085
View directory record Official record
Conditions
Alzheimer Disease
Interventions
S-equol and Placebo, Placebo and S-equol
Drug
Lead sponsor
Russell Swerdlow
Other
Eligibility
50 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
2
States / cities
Fairway, Kansas • Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 25, 2024 · Synced Oct 8, 2026, 9:57 AM EDT