Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Jul 23, 2026, 11:05 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 87 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Healthy Gut Microbiota Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Gut Microbiome Pill

NCT07243756
View directory record Official record
Conditions
Healthy
Interventions
3D-printed ingestible pill
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Native Chicory Inulin on Change and Persistence of Gut Microbiota

NCT06528041
View directory record Official record
Conditions
Healthy
Interventions
Inulin, Maltodextrin
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Aspirin on Gut Microbiome

NCT02761486
View directory record Official record
Conditions
Healthy
Interventions
Aspirin, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
50 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 25, 2020 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mediterranean-like Unprocessed (CLEAN-MED) Diet Intervention Study of the Gut Microbiome of Healthy Adults

NCT05411120
View directory record Official record
Conditions
Diet Therapy
Interventions
Western Diet, CLEAN-MED
Other
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Completed No phase listed Observational

Exploring Gut-Brain and Brain-Gut Interactions in Alcohol Use Disorder Via Microbiota Investigations: A Pilot Study

NCT03152760
View directory record Official record
Conditions
Alcoholism
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
21 Years to 70 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Kimchi and Gut Health

NCT07435831
View directory record Official record
Conditions
Healthy Adult Participants
Interventions
60 grams per day of intervention food
Other
Lead sponsor
University of California, Davis
Other
Eligibility
19 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Synbiotic on the Gut Microbiota and Adiposity-related Markers in Healthy Overweight Subjects

NCT02151825
View directory record Official record
Conditions
Gut Microbiota, Adiposity
Interventions
Synbiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Texas State University, San Marcos
Other
Eligibility
18 Years to 64 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2014 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Diets on the Gut Microbiota Composition and Cardiometabolic Wellbeing

NCT03539666
View directory record Official record
Conditions
Healthy
Interventions
diet
Other
Lead sponsor
South Dakota State University
Other
Eligibility
50 Years and older
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Brookings, South Dakota
Source: ClinicalTrials.gov public record
Updated Nov 9, 2021 · Synced Jul 23, 2026, 11:05 AM EDT
Recruiting Early Phase 1 Interventional

Fecal Microbiota Transplant for Patients With Chronic Pouchitis

NCT05829109
View directory record Official record
Conditions
Chronic Pouchitis, Pouchitis
Interventions
Fecal Microbiota Transplant (FMT)
Drug
Lead sponsor
Maia Kayal
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Changes to Skin Microbiome With Tape-Stripped Wounds

NCT03365934
View directory record Official record
Conditions
Healthy Volunteers
Interventions
ADHESIVE BANDAGE #1, ADHESIVE BANDAGE #2, ADHESIVE BANDAGE #3, Antibacterial Bandage with 0.8% BZK, Intact and No Bandage, Wounded and No Bandage
Device · Other
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
18 Years to 55 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Fair Lawn, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 3, 2019 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Trimethylamine-N-oxide Production and Metabolism

NCT02558673
View directory record Official record
Conditions
Healthy
Interventions
TMAO dietary precursors, Control (or active comparator)
Other
Lead sponsor
Cornell University
Other
Eligibility
21 Years to 50 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
2
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistant Starch Blend Gastrointestinal Impact

NCT03983772
View directory record Official record
Conditions
Quality of Life, Health, Subjective
Interventions
RS blend, Placebo
Dietary Supplement · Other
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Role of Dietary Intake and Host Genetics in Gut Microbiome Response to Resistant Starch Consumption

NCT05743790
View directory record Official record
Conditions
Healthy Volunteers
Interventions
RS2-control-RS4, RS4-control-RS2
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
18 Years and older
Enrollment
196 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2023 · Synced Jul 23, 2026, 11:05 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Berries, Inflammation, and Gut Microbiome

NCT04100200
View directory record Official record
Conditions
Overweight or Obesity, Healthy
Interventions
Mixed berries, FOS, Control, Combination
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
20 Years to 60 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Studies of Skin Microbes in Healthy People and in People With Skin Conditions

NCT00605878
View directory record Official record
Conditions
Eczema, Atopic Dermatitis
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
2 Years to 100 Years
Enrollment
530 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Study to Assess the Effect of Increasing Intake Amounts of Two Novel Glycans on the Gut Microbiota of Healthy Subjects

NCT04619875
View directory record Official record
Conditions
Healthy
Interventions
KB5, SG1, Lactulose
Other
Lead sponsor
Kaleido Biosciences
Industry
Eligibility
18 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 5, 2020 · Synced Jul 23, 2026, 11:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Military Health and Nutrition Examination Study

NCT06380322
View directory record Official record
Conditions
Hypertension, Type 2 Diabetes, Dyslipidemias, Cardiovascular Diseases
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
648 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
6
States / cities
Fort Carson, Colorado • Hinesville, Georgia • Fort Campbell, Kentucky + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Understanding the Efficacy of Dietary Supplement on Fungal Mycobiota in Healthy Volunteers: A Pilot Study

NCT06433310
View directory record Official record
Conditions
Gut Microbiome, Gut Health, Dietary Supplement, L-Phenylalanine, Phenylpropionic Acid
Interventions
L-Phenylalanine 500 mg Veg Capsule product
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pediatric Microbiome Study With Children Now Approximately 8-10 Years Old.

NCT03485755
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Not listed
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
8 Years to 60 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Skillman, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 25, 2019 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Adult HMO Supplementation and the Gut Microbiome

NCT06570330
View directory record Official record
Conditions
Healthy Adults
Interventions
SuperHMO, Non-GMO corn Maltodextrin, Rapid Absorption
Dietary Supplement
Lead sponsor
Seeding Inc
Industry
Eligibility
18 Years to 40 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Crofelemer on the Gut Microbiome in Healthy Volunteers and in HIV+ Patients With Non-Infectious Diarrhea

NCT04192487
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, Healthy Volunteers, HIV/AIDS, HIV Diarrhea, Human Immunodeficiency Virus
Interventions
Crofelemer delayed-release tablets 125mg
Drug
Lead sponsor
Napo Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
3
States / cities
Tustin, California • Stratford, Connecticut • Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2021 · Synced Jul 23, 2026, 11:05 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Soluble Arabinoxylan and Rice Bran Fiber on the Gut Microbiome in Healthy Adults

NCT06873204
View directory record Official record
Conditions
Healthy
Interventions
Soluble Arabinoxylan, Rice Bran, Maltodextrin (Placebo)
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 28, 2025 · Synced Jul 23, 2026, 11:05 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

The Healthy Diet and Lifestyle Study II

NCT05132686
View directory record Official record
Conditions
Intra-Abdominal Fat
Interventions
IER+MED, MED/DER
Behavioral
Lead sponsor
University of Hawaii
Other
Eligibility
35 Years to 69 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 23, 2026, 11:05 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Lentils and Chickpeas on Gut Microbiome and Metabolic Health

NCT06914375
View directory record Official record
Conditions
Dysbiosis
Interventions
Goya Foods - Canned Chickpeas, Goya Foods - Canned Lentils, Control
Other
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 30 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 23, 2026, 11:05 AM EDT