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Showing 1–24 of 981 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo (Water) Clear all
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Study of Thyroid Hormones in Prematures

NCT02103998
View directory record Official record
Conditions
Transient Hypothyroxinemia of Prematurity (THOP)
Interventions
thryoid hormone T4 + oral potassium iodide (KI) for 42 days, D5W - 5% dextrose water
Drug
Lead sponsor
New York Medical College
Other
Eligibility
1 Hour to 24 Hours
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Valhalla, New York
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Sep 4, 2026, 8:44 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

L-Menthol Injection as a Novel Technique During Colonoscopy

NCT02588248
View directory record Official record
Conditions
Colonic Polyps, Colon Cancer
Interventions
Peppermint Oil, Placebo
Drug · Other
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
45 Years and older
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 18, 2022 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 3 Interventional Results available

Long-term Safety of Linaclotide in Pediatric Participants With FC or IBS-C

NCT04166058
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation, Functional Constipation
Interventions
Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers), Functional Constipation (FC) participants (LIN-MD-62 and LIN-MD-64 completers)
Drug
Lead sponsor
AbbVie
Industry
Eligibility
6 Years to 18 Years
Enrollment
381 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
65
States / cities
Birmingham, Alabama • Foley, Alabama • Saraland, Alabama + 50 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2026 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of an Oral Intervention for Sexual Health in Transgender Men

NCT06470906
View directory record Official record
Conditions
Vaginal Dysbiosis, Vaginal Disease, Molecular-bacterial Vaginosis
Interventions
Probiotic Group, Placebo Group
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Sep 4, 2026, 8:44 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Ascending Glycan Dietary Supplementation in Healthy Adults

NCT04466761
View directory record Official record
Conditions
Healthy Individuals
Interventions
Monosaccharide Powder, Placebo Comparator
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 4, 2026, 8:44 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

An Efficacy Trial in the Research Area of Gastrointestinal Health & Bloating

NCT05418127
View directory record Official record
Conditions
Gastrointestinal Dysfunction
Interventions
Active, Placebo
Dietary Supplement · Other
Lead sponsor
Coconut Goodness Food Products Inc.
Industry
Eligibility
25 Years to 54 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 18, 2023 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 1 Interventional

Investigation of Nicotine Seeking Behavior in Current Smokers

NCT03670212
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Yohimbine Hydrochloride, Hydrocortisone, Lactose Monohydrate Powder
Drug
Lead sponsor
Wayne State University
Other
Eligibility
21 Years to 35 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Sep 4, 2026, 8:44 AM EDT
Not listed Phase 1Phase 2 Interventional

Intranasal Neuropeptide Y in Clinical Trial in Level Two Trauma Patients for PTSD and Acute Stress Disorder

NCT04071600
View directory record Official record
Conditions
Stress Disorders, Post-Traumatic, Stress Disorders, Traumatic, Acute
Interventions
Neuropeptide Y, Placebo
Drug · Other
Lead sponsor
New York Medical College
Other
Eligibility
18 Years to 65 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Valhalla, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate Efficacy and Safety of Inclisiran in Adolescents With Homozygous Familial Hypercholesterolemia

NCT04659863
View directory record Official record
Conditions
Familial Hypercholesterolemia - Homozygous
Interventions
Inclisiran, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
12 Years to 17 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating the Effects of Kombucha as a Hyperglycemic Therapeutic Agent Within Diabetic Human Subjects

NCT04107207
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Ginger Kombucha, Ginger Water
Dietary Supplement
Lead sponsor
Georgetown University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 29, 2020 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 2 Interventional Results available

Linaclotide Safety and Efficacy in 2 to 5-Year-Old Participants With Functional Constipation

NCT04110145
View directory record Official record
Conditions
Functional Constipation
Interventions
Linaclotide, Placebo
Drug
Lead sponsor
Allergan
Industry
Eligibility
2 Years to 5 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
18
States / cities
Birmingham, Alabama • Hot Springs, Arkansas • Little Rock, Arkansas + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2022 · Synced Sep 4, 2026, 8:44 AM EDT
Terminated Phase 2 Interventional Results available

Safety and Efficacy of SA4Ag Vaccine in Adults Having Elective Open Posterior Spinal Fusion Procedures With Multilevel Instrumentation

NCT02388165
View directory record Official record
Conditions
Staphylococcal Vaccine
Interventions
Staphylococcus aureus 4-Antigen (SA4Ag) Vaccine, Placebo
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 85 Years
Enrollment
3,450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
234
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 89 more
Source: ClinicalTrials.gov public record
Updated Jan 4, 2021 · Synced Sep 4, 2026, 8:44 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Clinical Trial of Intravenous Lidocaine After Spinal Surgery to Prevent Delirium and Reduce Pain

NCT05010148
View directory record Official record
Conditions
Postoperative Delirium, Postoperative Pain, Spinal Fusion
Interventions
Lidocaine IV, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
60 Years and older
Enrollment
278 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 6, 2025 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Pharmacokinetics and Safety of INX-08189 Administered With VictrelisTM in Healthy Subjects

NCT01471717
View directory record Official record
Conditions
Healthy
Interventions
INX-08189 50 mg QD X 5 days, INX-08189 / Victrelis 800 mg TID X three days, Victrelis 800 mg TID x 3 days, Victrelis 800 mg TID with INX-08189 50 mg QD, Placebo with Victrelis 800 mg, Cohort 2: Victrelis 800 mg with Placebo
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 21, 2012 · Synced Sep 4, 2026, 8:44 AM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Safety, Immunogenicity and Efficacy Study of Inactivated Whole Cell Shigella Flexneri 2a Vaccine With and Without dmLT in Adults

NCT03038243
View directory record Official record
Conditions
Shigella Sonnei Dysenteries
Interventions
Shigella flexneri 2a whole cell (Sf2aWC) vaccine and double mutant E. coli heat labile toxin (dmLT), Shigella flexneri 2a whole cell (Sf2aWC) vaccine, Placebo
Biological · Other
Lead sponsor
PATH
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 19, 2017 · Synced Sep 4, 2026, 8:44 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Clinical Study to Assess the Effects of Prebiotic and Probiotic Supplement

NCT06794619
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 50 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 4, 2026, 8:44 AM EDT
Recruiting Phase 2 Interventional

Study of Remibrutinib (LOU064) Efficacy and Safety and Exploration of Its Mechanism of Action in Participants With Chronic Urticaria

NCT06865651
View directory record Official record
Conditions
Chronic Urticaria (CU): Chronic Inducible Urticaria (CINDU) and Chronic Spontaneous Urticaria (CSU)
Interventions
Remibrutinib, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
North Miami Beach, Florida • Glenview, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Neuropeptides and Social Behavior

NCT01680718
View directory record Official record
Conditions
Social Psychology
Interventions
Intranasal oxytocin, Intranasal vasopressin, Intranasal placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 50 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Sep 4, 2026, 8:44 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Averting Complications of Proton Pump Inhibitor Therapy by Effervescent Calcium Magnesium Citrate

NCT03812380
View directory record Official record
Conditions
Osteoporosis, Hypomagnesemia
Interventions
EffCaMgCit, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Sep 4, 2026, 8:44 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women

NCT06544954
View directory record Official record
Conditions
Arterial Stiffness, Blood Pressure, Dysbiosis, Inflammation, Permeability; Increased
Interventions
Freeze-dried grape powder, Placebo powder
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 4, 2026, 8:44 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Sabroxy® Supplementation on Insulin Resistance and Cognitive Function in Adults With Mild Cognitive Impairment and Insulin Resistance

NCT07220694
View directory record Official record
Conditions
Insulin Resistance, Mild Cognitive Impairment, Cognitive Decline, Neurodegenerative Disorders
Interventions
Sabroxy®, Placebo
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
40 Years to 80 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 4, 2026, 8:44 AM EDT
Completed Phase 2 Interventional Results available

A Multi-Center Study in Men With Acquired Hypogonadotropic Hypogonadism to Compare Changes in Body Composition and Metabolic Parameters With Diet and Exercise in Conjunction With Treatment With 12.5 mg or 25 mg Enclomiphene

NCT02651688
View directory record Official record
Conditions
Acquired Hypogonadotropic Hypogonadism, Obesity
Interventions
Placebo, Enclomiphene
Drug
Lead sponsor
Repros Therapeutics Inc.
Industry
Eligibility
18 Years to 60 Years · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
5
States / cities
Albany, New York • Garden City, New York • Providence, Rhode Island + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2019 · Synced Sep 4, 2026, 8:44 AM EDT
Terminated Phase 2 Interventional Results available

Evaluation of Non-cytotoxic Suramin as a Chemosensitizer in Non-small Cell Lung Cancer

NCT01038752
View directory record Official record
Conditions
Non-small Cell Lung Cancer
Interventions
Suramin Drug:Docetaxel Drug: Carboplatin, Placebo Drug: Docetaxel Drug: Carboplatin
Drug
Lead sponsor
Optimum Therapeutics, LLC
Industry
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
2
States / cities
Chicago, Illinois • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Sep 4, 2026, 8:44 AM EDT
Active, not recruiting Phase 2 Interventional

Caffeine Use in the Management of Preterm Infants

NCT06327152
View directory record Official record
Conditions
Apnea of Prematurity
Interventions
Caffeine, Sterile Water Placebo
Drug · Other
Lead sponsor
University of California, Irvine
Other
Eligibility
1 Week to 40 Weeks
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 4, 2026, 8:44 AM EDT