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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:50 PM EDT

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Showing 25–48 of 219 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Inactive Capsule Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor System

NCT06261905
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
[11C]-PHNO, Calcitriol, Placebo Control, PET Scan
Drug · Dietary Supplement · Other + 1 more
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 14, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

To Assess Bioavailability, Food Effect and Pharmacokinetics of Gepotidacin Tablets: A Phase I, Single-Dose, 2 Part Study in Healthy Subjects.

NCT02853435
View directory record Official record
Conditions
Infections, Bacterial
Interventions
Gepotidacin RC Tablet, Gepotidacin HSWG Tablet, Gepotidacin Capsule
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Anaheim, California • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 3 Interventional Results available

Study of Urate Elevation in Parkinson's Disease, Phase 3

NCT02642393
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Inosine, Placebo
Drug
Lead sponsor
Michael Alan Schwarzschild
Other
Eligibility
30 Years and older
Enrollment
298 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
61
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Atorvastatin Treatment of Cavernous Angiomas With Symptomatic Hemorrhage Exploratory Proof of Concept (AT CASH EPOC) Trial

NCT02603328
View directory record Official record
Conditions
Cerebral Cavernous Malformation
Interventions
Atorvastatin, Placebo
Drug · Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 4 Interventional Results available

A Phase IV Safety and Efficacy Study of VI-0521 in Adolescents With Obesity

NCT03922945
View directory record Official record
Conditions
Adolescent Obesity, Obesity in Adolescence, Adolescent Overweight
Interventions
VI-0521 oral capsule, Placebo oral capsule, Lifestyle Modification
Drug · Behavioral
Lead sponsor
VIVUS LLC
Industry
Eligibility
12 Years to 16 Years
Enrollment
223 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 10, 2022 · Synced Oct 21, 2026, 5:50 PM EDT
Not listed Not applicable Interventional

Viome Nutritional Programs to Improve Clinical Outcomes for Mental Health Conditions

NCT05563857
View directory record Official record
Conditions
Mental Health, Depression, Anxiety
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Comparison of the Analgesic Effects of Dronabinol and Smoked Marijuana in Daily Marijuana Smokers

NCT00743119
View directory record Official record
Conditions
Pain Threshold, Mood
Interventions
Placebo capsules, Inactive marijuana (0% THC), Low dose Dronabinol, High dose Dronabinol, Low THC marijuana, High THC marijuana
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2017 · Synced Oct 21, 2026, 5:50 PM EDT
Recruiting Early Phase 1 Interventional

Prednisone in Adults With an Immune-Mediated Subtype of Autism Spectrum Disorder

NCT06934915
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism Spectrum Disorders, Autistic Disorder, Autism
Interventions
Prednisone, Placebo
Drug
Lead sponsor
Christopher John McDougle, M.D.
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Lexington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 3 Interventional Results available

Mirtazapine Treatment of Anxiety in Children and Adolescents With Pervasive Developmental Disorders

NCT01302964
View directory record Official record
Conditions
Autism Spectrum Disorders
Interventions
Placebo, Mirtazapine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
5 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
2
States / cities
Indianapolis, Indiana • Lexington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

The Effect of Vitamin D Supplementation on Muscle Power in Elite Cyclist

NCT01518725
View directory record Official record
Conditions
Muscle Power
Interventions
Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Oklahoma State University
Other
Eligibility
18 Years to 35 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Stillwater, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Not applicable Interventional

Rice Bran Supplementation in Treated HIV Infection

NCT02922907
View directory record Official record
Conditions
Inflammation in HIV Infection
Interventions
arabinoxylan rice bran, Placebo for arabinoxylan rice bran
Dietary Supplement
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 29, 2021 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Ashwagandha Extract (Capsule KSM-66 300 mg) on Sexual Health in Healthy Women

NCT05831241
View directory record Official record
Conditions
Sexual Health
Interventions
Ashwagandha, Placebo
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
18 Years to 55 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 1 Interventional

A Study of ART24 in Subjects Recently Cured of a Clostridioides Difficile Infection (CDI)

NCT04891965
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
ART24, Placebo
Biological · Drug
Lead sponsor
Adiso Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
13
States / cities
Palm Springs, California • Clearwater, Florida • Doral, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2022 · Synced Oct 21, 2026, 5:50 PM EDT
Not listed Not applicable Interventional

Curcumin in Management of Chronic Obstructive Pulmonary Disease

NCT04687449
View directory record Official record
Conditions
COPD
Interventions
Curcumin therapy, Placebo, Standard care
Dietary Supplement · Other
Lead sponsor
Danbury Hospital
Other
Eligibility
40 Years to 89 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 9, 2021 · Synced Oct 21, 2026, 5:50 PM EDT
Terminated Phase 2 Interventional

Investigational Microbiota Restoration Therapeutic for Hepatic Encephalopathy

NCT04155099
View directory record Official record
Conditions
Hepatic Encephalopathy, Cirrhosis, Liver
Interventions
RBX7455, Placebo
Biological
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years to 75 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Jefferson, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Oct 21, 2026, 5:50 PM 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 21, 2026, 5:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Probiotics and Health-related Quality of Life in Individuals With Seasonal Allergies

NCT02349711
View directory record Official record
Conditions
Healthy
Interventions
Probiotic mixture, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 60 Years
Enrollment
224 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 9, 2017 · Synced Oct 21, 2026, 5:50 PM EDT
Recruiting Phase 4 Interventional

Personalized Analgesia Through Central Nervous System Engagement to Unlock Performance

NCT07759336
View directory record Official record
Conditions
Knee Osteoarthritis (Knee OA), Chronic Pain, Chronic Knee Pain
Interventions
Duloxetine, Placebo
Drug
Lead sponsor
Benedict Alter
Other
Eligibility
45 Years to 80 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 21, 2026 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

The Use of Venlafaxine in Reducing Pain in Primary Total Knee Replacement

NCT05023278
View directory record Official record
Conditions
Acute Pain, Chronic Pain, Knee Pain Chronic, Neuropathic Pain
Interventions
Venlafaxine 37.5 MG, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Recruiting Not applicable Interventional

Viome Nutritional Programs to Improve Clinical Outcomes for Metabolic Conditions

NCT05564273
View directory record Official record
Conditions
Metabolic Health
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 21, 2026, 5:50 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

The Acute Effects of Psilocybin on Cognition, Memory, and Brain Function

NCT07079852
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Psilocybin 15mg
Drug
Lead sponsor
Manoj Doss
Other
Eligibility
21 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Oct 21, 2026, 5:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Relative Bioavailability, Safety, Tolerability, Pharmacokinetics (PK) and Food Effect Study of GSK2140944 in Healthy Subjects

NCT02045849
View directory record Official record
Conditions
Infections, Bacterial
Interventions
GSK2140944 capsule, GSK2140944 tablet, Itraconazole capsule
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2017 · Synced Oct 21, 2026, 5:50 PM 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 21, 2026, 5:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effects of Commonly Used Medications on Mood and Choice

NCT03652740
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Methylphenidate, Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 21, 2026, 5:50 PM EDT