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ClinicalTrials.gov public records Last synced Oct 25, 2026, 3:14 PM EDT

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Showing 1–24 of 407 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Identical Placebo capsule Clear all
Enrolling by invitation Not applicable Interventional

NAD Supplementation in Parkinson's Disease

NCT07703137
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Nicotinamide Riboside (NR), Oral placebo capsules
Dietary Supplement
Lead sponsor
University of Oklahoma
Other
Eligibility
55 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effect of BIO-K+ on Symptoms of Irritable Bowel Syndrome

NCT01545037
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
L. acidophilus CL1285® + L. casei LBC80R® + L. rhamnosus CLR2®, Placebo
Dietary Supplement · Other
Lead sponsor
Bio-K Plus International Inc.
Industry
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
3
States / cities
Garden Grove, California • San Francisco, California • Westlake Village, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2017 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional

A Polysomnographic Study to Compare the Efficacy of Gastric Retentive Zaleplon Accordion Pill to Placebo in Subjects With Insomnia

NCT01277107
View directory record Official record
Conditions
Insomnia
Interventions
Zaleplon AP formulation, Placebo capsule
Drug
Lead sponsor
Intec Pharma Ltd.
Industry
Eligibility
18 Years to 65 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
5
States / cities
San Diego, California • Miami, Florida • Pembroke Pines, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2014 · Synced Oct 25, 2026, 3:14 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Safety and Tolerability of FB-001 in Healthy Adult Volunteers and Adult Subjects With Enteric Hyperoxaluria

NCT05650112
View directory record Official record
Conditions
Healthy, Enteric Hyperoxaluria
Interventions
FB-001, Placebo
Biological
Lead sponsor
Federation Bio Inc.
Industry
Eligibility
18 Years to 74 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Results available

Uncomplicated Skin and Soft Tissue Infections Caused by Community-Associated Methicillin-Resistant Staphylococcus Aureus

NCT00730028
View directory record Official record
Conditions
Staphylococcal Infection
Interventions
Trimethoprim-sulfamethoxazole, Placebo, Clindamycin
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 85 Years
Enrollment
1,310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
6
States / cities
San Francisco, California • Torrance, California • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 25, 2026, 3:14 PM EDT
Terminated Phase 2 Interventional Results available

Standard of Care (SOC) With or Without CTS-1027 in Hepatitis C (HCV) Null-Responders

NCT01273064
View directory record Official record
Conditions
Hepatitis C
Interventions
CTS-1027, pegylated interferon, Ribavirin, Placebo
Drug
Lead sponsor
Conatus Pharmaceuticals Inc.
Industry
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
45
States / cities
Birmingham, Alabama • Coronado, California • La Jolla, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2012 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 3 Interventional Results available

Mecamylamine for the Treatment of Patients With Depression and Alcohol Dependence

NCT00563797
View directory record Official record
Conditions
Alcohol Dependence, Depression
Interventions
Mecamylamine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 18, 2016 · Synced Oct 25, 2026, 3:14 PM EDT
Active, not recruiting Phase 1 Interventional

Study to Evaluate Safety, Tolerability and Efficacy of Oral E-B-FAHF-2 in Mild-to-Moderate Crohn's Disease

NCT03992469
View directory record Official record
Conditions
Crohn's Disease
Interventions
EBFAHF-2, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 60 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 25, 2026, 3:14 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy and Safety of Shatavari Root Extract in Women's Sexual Wellness

NCT07441083
View directory record Official record
Conditions
Sexual Wellness, Women Health
Interventions
Shatavari (Asparagus racemosus) Root Extract, Placebo Capsule
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
20 Years to 50 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional

A 16-Week Study to Evaluate the Efficacy, Safety, and Tolerability of GLY-200 in Participants With Obesity

NCT06259981
View directory record Official record
Conditions
Obesity
Interventions
GLY-200, Placebo
Drug
Lead sponsor
Glyscend, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
5
States / cities
Clearwater, Florida • Ocoee, Florida • Marrero, Louisiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Not applicable Interventional Results available

High Dose Omega-3 Fatty Acids in the Treatment of Sport Related Concussions

NCT01814527
View directory record Official record
Conditions
Mild Concussion, Brain Concussion, Cerebral Concussion
Interventions
Docosahexaenoic acid, Placebo
Dietary Supplement · Drug
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 40 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Oct 25, 2026, 3:14 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Monosodium Glutamate on Microbiome-Derived Imidazole Propionate Production in Healthy Volunteers

NCT07700368
View directory record Official record
Conditions
Healthy Adult
Interventions
L-histidine, Monosodium glutamate (MSG), Sodium chloride (NaCl)
Dietary Supplement
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Results available

Topiramate to Aid Smoking Cessation in Alcohol Dependent Men

NCT00802412
View directory record Official record
Conditions
Nicotine Dependence, Alcohol Dependence
Interventions
Topiramate, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 70 Years · Male only
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Single Dose of Ashwagandha Root Extract on Sexual Health in Women.

NCT07182253
View directory record Official record
Conditions
Female Sexual Health
Interventions
KSM-66 Ashwagandha® capsule, Identical Placebo capsule
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
18 Years to 55 Years · Female only
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 Dec 18, 2025 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Results available

A Safety and Effectiveness Study of TMC435 in Chronic, Genotype 1, Hepatitis C Patients Who Failed to Previous Standard Treatment

NCT00980330
View directory record Official record
Conditions
Hepatitis C
Interventions
TMC435, Placebo, Peg-IFN-alfa-2a (P), Ribavirin (R)
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
18 Years to 70 Years
Enrollment
463 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
17
States / cities
La Jolla, California • Los Angeles, California • Jacksonville, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2014 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Results available

Gabapentin Treatment of Benzodiazepine Abuse in Methadone Maintenance Patients

NCT00420771
View directory record Official record
Conditions
Benzodiazepine Dependence, Opioid Dependence
Interventions
Gabapentin, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Long Island City, New York
Source: ClinicalTrials.gov public record
Updated Apr 24, 2019 · Synced Oct 25, 2026, 3:14 PM EDT
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 25, 2026, 3:14 PM EDT
Terminated Phase 2 Interventional

Phase 2 Study to Examine Grape Seed Extract as an Anti-Oligomerization Agent in Alzheimer's Disease (AD)

NCT02033941
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Meganatural-Az Grapeseed Extract, Placebo
Drug
Lead sponsor
Hillel Grossman
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Not applicable Interventional Results available

Efficacy of Sleep Interventions for Posttraumatic Stress Disorder (PTSD)

NCT00393874
View directory record Official record
Conditions
Anxiety Disorders, Mood Disorders, Insomnia, Nightmares
Interventions
Behavioral Sleep Intervention, Prazosin, Placebo
Behavioral · Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 24, 2016 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Not applicable Interventional

A Pilot Study of the Impact of Vitamin D3 on Muscle Performance in Elderly Women

NCT00986596
View directory record Official record
Conditions
Sarcopenia, Falls
Interventions
vitamin D3, Placebo
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
65 Years and older · Female only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety for Home Administration of Microdose Psilocybin Use

NCT06450210
View directory record Official record
Conditions
Psychedelic Experiences
Interventions
psilocybin trihydrate, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 25, 2026, 3:14 PM EDT
Completed Not applicable Interventional Results available

Effects of Eszopiclone on Sleep-dependent Learning in Schizophrenia

NCT00833547
View directory record Official record
Conditions
Schizophrenia
Interventions
eszopiclone, placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 9, 2014 · Synced Oct 25, 2026, 3:14 PM EDT
Terminated Phase 4 Interventional Results available

Acetaminophen Use in Labor - Does Use of Acetaminophen Reduce Neuraxial Analgesic Drug Requirement During Labor?

NCT02181387
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Oct 25, 2026, 3:14 PM EDT
Terminated Not applicable Interventional

Investigating a Phosphatidylserine Based Dietary Approach for the Management of Mild Cognitive Impairment

NCT02211560
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Phosphatidylserine, Placebo
Other
Lead sponsor
Enzymotec
Industry
Eligibility
65 Years to 85 Years
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
13
States / cities
Encino, California • Los Alamitos, California • Newport Beach, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2018 · Synced Oct 25, 2026, 3:14 PM EDT