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ClinicalTrials.gov public records Last synced Oct 4, 2026, 3:30 PM EDT

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Showing 73–89 of 89 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Healthy Gut Microbiota Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of a Fermented Dairy Protein With Prebiotic Fiber on GI Complaints

NCT06946017
View directory record Official record
Conditions
Digestive Health, Quality of Life
Interventions
Fermented dairy protein with prebiotic fiber supplement, Control placebo
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 50 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 4, 2026, 3:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Anti-inflammatory Effect and Associated Mechanisms of Mango Consumption

NCT04726293
View directory record Official record
Conditions
Overweight or Obesity, Healthy
Interventions
Mango, Control
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
20 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 11, 2025 · Synced Oct 4, 2026, 3:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Nutritional Supplement on Nutrient Status and Quality of Life

NCT06332898
View directory record Official record
Conditions
Nutrition, Healthy, Gastrointestinal Microbiome, Healthy Aging
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 60 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 4, 2025 · Synced Oct 4, 2026, 3:30 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Essential Oil-Based Product System for Digestive Support

NCT07653815
View directory record Official record
Conditions
Healthy
Interventions
essential oil supplement, Essential Oil, Placebo supplement, placebo essential oil
Dietary Supplement · 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 Jun 17, 2026 · Synced Oct 4, 2026, 3:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Soluble Corn Fiber and Calcium Utilization in Adolescents

NCT01571440
View directory record Official record
Conditions
Osteoporosis
Interventions
No soluble corn fiber, 12 g soluble corn fiber
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
12 Years to 15 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 10, 2014 · Synced Oct 4, 2026, 3:30 PM 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 3, 2023 · Synced Oct 4, 2026, 3:30 PM EDT
Withdrawn Phase 2 Interventional

Healthy-donor Microbiome MTP-101-C in Steroid Relapse/Refractory Immune-related Cutaneous Adverse Events (irCAEs) and Immune-mediated Colitis (IMC)

NCT06499896
View directory record Official record
Conditions
Immune-mediated Colitis (IMC), Immune-related Dermatitis
Interventions
MTP-101-C
Biological
Lead sponsor
Diwakar Davar
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2031
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 4, 2026, 3:30 PM 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 26, 2019 · Synced Oct 4, 2026, 3:30 PM 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 29, 2025 · Synced Oct 4, 2026, 3:30 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Enfamil NeuroPro Study

NCT06059209
View directory record Official record
Conditions
Infant Development, Infant ALL
Interventions
Enfamil NeuroPro, Enfamil Infant
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
0 Months to 4 Months
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Oct 4, 2026, 3:30 PM 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 11, 2025 · Synced Oct 4, 2026, 3:30 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Human Milk Oligosaccharide-Based Synbiotic Supplement for Intestinal Microbiota Dysbiosis

NCT06615986
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Cardiosyn
Dietary Supplement
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 4, 2026, 3:30 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Healthy Volunteer Short Chain Fatty Acid Study

NCT05254340
View directory record Official record
Conditions
Healthy
Interventions
Inulin
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 75 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 25, 2024 · Synced Oct 4, 2026, 3:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Systems Biology of Flu Vaccine in Healthy Adults With and Without the Use of Antibiotics

NCT02154061
View directory record Official record
Conditions
Influenza
Interventions
IIV Flu Vaccine, Metronidazole, Neomycin, Vancomycin
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 40 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 4, 2026, 3:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Health Properties of Pecan Nut Consumption

NCT07227259
View directory record Official record
Conditions
Healthy Adults
Interventions
pecan nut
Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 75 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 Feb 24, 2026 · Synced Oct 4, 2026, 3:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Genomic Tools for Studying the Ecology of the Human Vaginal Microflora

NCT00576797
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
12 Years to 45 Years · Female only
Enrollment
396 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
3
States / cities
Atlanta, Georgia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2016 · Synced Oct 4, 2026, 3:30 PM 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 6, 2026 · Synced Oct 4, 2026, 3:30 PM EDT