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ClinicalTrials.gov public records Last synced May 21, 2026, 11:50 PM 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 470 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Microbiota Clear all
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy Adult Females, Healthy Adult Male
Interventions
Lion Mane (Hericium erinaceus) fruiting body extract - Nordic Origin, Lions Mane (Hericium erinaceus) Fruiting body and mycelium, Maltodextrin (Placebo)
Dietary Supplement · Other
Lead sponsor
Applied Food Sciences Inc.
Industry
Eligibility
40 Years to 65 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Test if Increased Chewing Will Increased Microbiota SCFA Production
Interventions
Intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced May 21, 2026, 11:50 PM EDT
Recruiting Phase 1 Interventional
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
MTP-101-C encapsulated Microbiota, Vancomycin, Neomycin
Biological · Drug
Lead sponsor
Melana Yuzefpolskaya, MD
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced May 21, 2026, 11:50 PM EDT
Completed Phase 1Phase 2 Interventional Results available
View directory record Official record
Conditions
Sclerosing Cholangitis
Interventions
Fecal Microbiota Transplantation
Biological
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced May 21, 2026, 11:50 PM EDT
Terminated No phase listed Observational
View directory record Official record
Conditions
Renal Transplant
Interventions
Stool Specimen Collection, Anal Swab Sampling, Short Diet Assessment (SDA), NHANES Dietary Screener Questionnaire (DSQ)
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced May 21, 2026, 11:50 PM EDT
Active, not recruiting Early Phase 1 Interventional
View directory record Official record
Conditions
Auto-Brewery Syndrome, Gut Fermentation Syndrome
Interventions
Fecal microbiota transplantation capsules
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced May 21, 2026, 11:50 PM EDT
Withdrawn Early Phase 1 Interventional
View directory record Official record
Conditions
Anorexia Nervosa
Interventions
Fecal Microbiota Transplantation (FMT)
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced May 21, 2026, 11:50 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Acute Myeloid Leukemia
Interventions
Sample Collection Blood, Stool Sample
Diagnostic Test
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 99 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 2, 2023 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
Pea Fiber, Control
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
60 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 4, 2019 · Synced May 21, 2026, 11:50 PM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Gingival Inflammation
Interventions
Stannous Fluoride Toothpaste (SnF)
Drug
Lead sponsor
Colgate Palmolive
Industry
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced May 21, 2026, 11:50 PM EDT
Active, not recruiting Phase 2 Interventional
View directory record Official record
Conditions
Autism Spectrum Disorder, Gastro-Intestinal Disorder, Constipation, Diarrhea
Interventions
vancomycin, Miralax, intestinal microbiota, placebo vancomycin, Miralax, placebo intestinal microbiota
Combination Product
Lead sponsor
Arizona State University
Other
Eligibility
5 Years to 17 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 24, 2025 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional
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 12, 2022 · Synced May 21, 2026, 11:50 PM EDT
Completed Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Obesity
Interventions
Lactobacillus Rhamnosus GG, Placebo
Dietary Supplement
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 9, 2016 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
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 May 21, 2026, 11:50 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy, Normal Weight, Overweight, Obese
Interventions
Walnut, Nut-Free
Other
Lead sponsor
University of California, Davis
Other
Eligibility
20 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced May 21, 2026, 11:50 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Suspected or Confirmed COVID-19
Interventions
NBT-NM108, Usual Care Only
Drug · Other
Lead sponsor
Notitia Biotechnologies Company
Industry
Eligibility
18 Years to 79 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced May 21, 2026, 11:50 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Dyslipidemias, Obesity
Interventions
Milk Polar Lipid-Rich Dairy Powder, Dairy Powder
Drug · Dietary Supplement
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 70 Years
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 21, 2025 · Synced May 21, 2026, 11:50 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Gastrointestinal Symptoms
Interventions
GlutenShield, Placebo
Dietary Supplement · Other
Lead sponsor
East Tennessee State University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Johnson City, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Bariatric Surgery
Procedure
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
21 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 5, 2020 · Synced May 21, 2026, 11:50 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Crohn Disease, Pregnancy
Interventions
Diet-CD
Other
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older · Female only
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2027
U.S. locations
2
States / cities
Worcester, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced May 21, 2026, 11:50 PM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Nasal endoscopy with microbiome swab and mucus collection through filter paper and sponge, Olfactory Function Testing, Survey Completion
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced May 21, 2026, 11:50 PM EDT
Terminated Phase 1 Interventional
View directory record Official record
Conditions
Infection Due to Resistant Organism
Interventions
Fecal Microbiota Transplant (FMT), Bowel preparation, Stool or perirectal swab sampling, Fasting
Biological · Procedure · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 14, 2023 · Synced May 21, 2026, 11:50 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal Microbial Transplantation
Biological
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 100 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced May 21, 2026, 11:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
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 29, 2022 · Synced May 21, 2026, 11:50 PM EDT