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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:57 PM EDT

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Showing 169–192 of 483 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Microbiota Clear all
Terminated Phase 2 Interventional Results available

Fecal Microbiota Transplantation (FMT) in Recipients After Allogeneic Hematopoietic Cell Transplantation (HCT)

NCT03720392
View directory record Official record
Conditions
Allogeneic Hematopoietic Cell Transplantation (HCT)
Interventions
FMT, Placebo
Drug
Lead sponsor
Zachariah Michael DeFilipp
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Oct 21, 2026, 7:57 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Oral Fecal Microbiota Transplant Feasibility Study in Alzheimer's Disease

NCT03998423
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Fecal Microbiota Transplant
Biological
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
45 Years and older
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 24, 2020 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Food Effects on the Gut Microbiota

NCT03078283
View directory record Official record
Conditions
Gut Microbial Responses to Dietary Fiber
Interventions
high-fiber food type
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
31 Years to 45 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Oct 21, 2026, 7:57 PM EDT
Terminated Not applicable Interventional

Medical Home Care for Hematopoietic Stem Cell Transplantation Phase 2

NCT02218151
View directory record Official record
Conditions
Blood Disorders
Interventions
Patient-Centered Medical Home (PCMH), Standard Care
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 12, 2024 · Synced Oct 21, 2026, 7:57 PM EDT
Recruiting No phase listed Observational

Intestinal Microbiota in Stem Cell Transplant Transplant Admission

NCT04623424
View directory record Official record
Conditions
Stem Cell Transplant Complications
Interventions
intestinal microbiota
Diagnostic Test
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 80 Years
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ergogenic Properties of Magnesium Supplementation

NCT05282693
View directory record Official record
Conditions
Exercise Performance, Gut -Microbiota, Mitochondrial Function
Interventions
ReMag, Placebo
Dietary Supplement
Lead sponsor
Christopher Bell
Other
Eligibility
18 Years to 40 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 21, 2026, 7:57 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Proton Pump Inhibitors on Gut Microbiota Composition and Metabolites in Healthy Subjects Using CapScan

NCT07054593
View directory record Official record
Conditions
Healthy Subjects
Interventions
CapScan
Device
Lead sponsor
Envivo Bio Inc
Industry
Eligibility
18 Years to 85 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Oct 21, 2026, 7:57 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Potential Restoration of the Infant Microbiome

NCT02407184
View directory record Official record
Conditions
Human Microbiome
Interventions
Newborn exposure to mother vaginal microbiota
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 40 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2018 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exploring the Effects of a High Chlorophyll Dietary Intervention to Reduce Colon Cancer Risk in Adults

NCT03582306
View directory record Official record
Conditions
Colon Cancer Prevention
Interventions
High chlorophyll diet - intervention 1st, High chlorophyll diet - control 1st
Behavioral
Lead sponsor
Auburn University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 15, 2019 · Synced Oct 21, 2026, 7:57 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Microbiota or Placebo After Antimicrobial Therapy for Recurrent C. Difficile at Home (MATCH)

NCT03005379
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal Microbiota Therapy (FMT), Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Oct 21, 2026, 7:57 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Feasibility and Safety Study of Parent-to-Child Nasal Microbiota Transplant

NCT05695196
View directory record Official record
Conditions
Staphylococcus Aureus, Microbial Colonization, Neonatal Infection
Interventions
nasal microbiota transplant (NMT), Placebo
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
Up to 60 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Spice Consumption on the Microbiome

NCT03676803
View directory record Official record
Conditions
Microbiota
Interventions
mixed spices, placebo capsule containing 5 g of maltodextrin
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effect of Concord Grape Polyphenol-soy Protein Isolate Complex (GP-SPI) on Gut Microbiota

NCT04018066
View directory record Official record
Conditions
Mechanisms, Defense
Interventions
GP-SPI
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 21, 2026, 7:57 PM EDT
Active, not recruiting Phase 2 Interventional

Microbiota Transfer Therapy for Adults With Autism Spectrum Disorder (ASD) Who Have Gastrointestinal Disorders

NCT03408886
View directory record Official record
Conditions
Autism Spectrum Disorder, Gastrointestinal Disorder
Interventions
Vancomycin, MoviPrep, Full Spectrum Microbiota
Drug · Biological
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 60 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 9, 2023 · Synced Oct 21, 2026, 7:57 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized, Double-Blind Study to Assess the Effect of a Postbiotic on Oxidative Stress and Exercise Performance

NCT06795425
View directory record Official record
Conditions
Oxidative Stress, Healthy, Exercise-induced Muscle Damage, Exercise-induced Muscle Soreness, Immune Function, Gut Health, Microbiome Analysis, Exercise Performance, Exercise Metabolism
Interventions
Postbiotic Active Lifestyle Blend, Placebo
Dietary Supplement · Other
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 45 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Oct 21, 2026, 7:57 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Plants Optimizing Development Study (PODS)

NCT06276426
View directory record Official record
Conditions
Healthy Children
Interventions
Soy foods, Non-Soy Plant-Based Foods
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
8 Years to 11 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Oct 21, 2026, 7:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Role of Gut Microbiota in Hypertension

NCT02188381
View directory record Official record
Conditions
Hypertension
Interventions
Stool Sample and Blood Sample
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 17, 2025 · Synced Oct 21, 2026, 7:57 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Peanut Consumption on Stress, Immune Function, Inflammation, and Cardiovascular Health in High-Stress Individuals

NCT07735221
View directory record Official record
Conditions
Immune System, Stress, Chronic Stress, Cardiovascular Health
Interventions
Peanuts, roasted, salted with skins, Isocaloric food
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 21, 2026, 7:57 PM EDT
Not listed Phase 1 Interventional

Fecal Transplant for Pediatric Patients Who Have Recurrent C-diff Infection

NCT02134392
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Fecal Microbiota Transplantation
Biological
Lead sponsor
Jonathan Gisser
Other
Eligibility
2 Years to 21 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 29, 2023 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional

Microbiome, Exercise Tracking Study: Among Individuals at High Risk for Colorectal Cancer

NCT02780284
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Physical activity intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
21 Years to 69 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Oct 21, 2026, 7:57 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Grape Powder on Psychological Distress and Gut Microbiota in College Students

NCT07214428
View directory record Official record
Conditions
Gut Microbiota, Psychological Distress
Interventions
freeze-dried table grape powder, Placebo
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 30 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 21, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Full-fat Yogurt and Glucose Tolerance

NCT03577119
View directory record Official record
Conditions
Pre-Diabetes
Interventions
Full-fat yogurt, Non-fat yogurt
Dietary Supplement
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
45 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jun 30, 2022 · Synced Oct 21, 2026, 7:57 PM EDT
Not listed Phase 2 Interventional

Fecal Microbiota Transplant and Pembrolizumab for Men With Metastatic Castration Resistant Prostate Cancer.

NCT04116775
View directory record Official record
Conditions
Prostate Cancer, Prostate Cancer Metastatic
Interventions
Fecal microbiota transplant, Pembrolizumab, Enzalutamide
Biological · Drug
Lead sponsor
Julie Graff, MD
Federal
Eligibility
18 Years and older · Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 23, 2022 · Synced Oct 21, 2026, 7:57 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Fiber's Utilization for Energy and Life

NCT05934357
View directory record Official record
Conditions
Diet Habit
Interventions
Fiber, Control
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
22 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 6, 2023 · Synced Oct 21, 2026, 7:57 PM EDT