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ClinicalTrials.gov public records Last synced Nov 15, 2026, 4:42 AM EST

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Showing 73–93 of 93 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Microbiome, Human Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Microbiome Derived Metabolism and Pharmacokinetics

NCT05065671
View directory record Official record
Conditions
Microbial Colonization
Interventions
Tolcapone 100 MG, Duloxetine 20 MG
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Somerville, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Enrolling by invitation No phase listed Observational

Studies of the Human Microbiome in Clinical Center Patients

NCT01933620
View directory record Official record
Conditions
Multidrug-resistant Colonization
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
2 Years to 120 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Novel Food Product Containing Microbiota Accessible Carbohydrates on the Human Microbiome

NCT03058575
View directory record Official record
Conditions
Gut Microbiome
Interventions
Dietary MACs, Control
Dietary Supplement · Other
Lead sponsor
Access Business Group
Industry
Eligibility
40 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Nov 15, 2026, 4:42 AM EST
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 4, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Active, not recruiting No phase listed Observational

Anal High-risk HPV, HSIL, and Microbiome Among Hispanic Peoples Living With HIV (PLWH)

NCT06651957
View directory record Official record
Conditions
Human Immunodeficiency Virus, Human Papillomavirus-Related Anal Squamous Cell Carcinoma, High-Grade Squamous Intraepithelial Lesions
Interventions
Biospecimen Collection, Questionnaires
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Active, not recruiting No phase listed Observational

REMBRANDT: REcovery of the MicroBiome fRom Antibiotics for Dental implanTs

NCT05622721
View directory record Official record
Conditions
Dysbiosis, Clostridium Difficile, Pet-Human Bonding, Antibiotic-Associated Colitis
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Rhamnosus GG Versus Placebo in Elderly Subjects Receiving Live Attenuated Influenza Vaccine

NCT01545349
View directory record Official record
Conditions
Healthy, Influenza
Interventions
Lactobacillus rhamnosus GG ATCC 53103 (LGG), Placebo, Live attenuated influenza vaccine
Biological
Lead sponsor
Patricia L. Hibberd
Other
Eligibility
65 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Nov 15, 2026, 4:42 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Assessing Uniqueness of Inflammatory Bowel Disease Related Microbiome-derived Biomarkers

NCT05640583
View directory record Official record
Conditions
Irritable Bowel Disease
Interventions
Hygieacare System
Device
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 27, 2023 · Synced Nov 15, 2026, 4:42 AM EST
Not listed Not applicable Interventional Accepts healthy volunteers

The Effects of Agro-ecological Farming Systems on Human Health

NCT05575258
View directory record Official record
Conditions
Inflammatory Response
Interventions
44-Day Diet Conventionally Sourced - YELLOW Diet, 44-Day Diet Agro-Ecologically Sourced - GREEN Diet
Other
Lead sponsor
Utah State University
Other
Eligibility
35 Years to 60 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Logan, Utah
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced Nov 15, 2026, 4:42 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

ButyraGen™, Short Chain Fatty Acids and Gut Microbiome

NCT05601635
View directory record Official record
Conditions
Healthy
Interventions
ButyraGen™
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Human Microbiome and Healthcare Associated Infections - Nursing Home Dwelling Older Veterans

NCT04218799
View directory record Official record
Conditions
Human Microbiome
Interventions
Intranasal Mupirocin and Topical Chlorhexidine
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
50 Years and older
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Baltimore, Maryland • Perry Point, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 6, 2023 · Synced Nov 15, 2026, 4:42 AM EST
Completed No phase listed Observational Accepts healthy volunteers

The Role of Dietary Titanium Dioxide on the Human Gut Microbiome and Health

NCT05864352
View directory record Official record
Conditions
Inflammation, Microbiota, Gastrointestinal Irritation
Interventions
Not listed
Lead sponsor
University of Massachusetts, Lowell
Other
Eligibility
18 Years to 30 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Lowell, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Rhamnosus GG Vs. Placebo in Elderly Subjects Receiving Trivalent Inactivated Influenza Vaccine

NCT01368029
View directory record Official record
Conditions
Healthy, Elderly
Interventions
Lactobacillus rhamnosus GG ATCC 53103 (LGG), Placebo
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
65 Years to 80 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 1 Interventional Accepts healthy volunteers

Assessing the Role of a Fermented Soy Extract in Inflammation and the Human Microbiome

NCT02656056
View directory record Official record
Conditions
Obesity
Interventions
Food: (Q-Can Plus fermented soybean beverage)
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 11, 2018 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 1 Interventional Accepts healthy volunteers

Longitudinal Study of the Human Intestinal Microbiome

NCT00832286
View directory record Official record
Conditions
Dysbacteriosis
Interventions
Ciprofloxacin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Nov 15, 2026, 4:42 AM EST
Completed Phase 4 Interventional

NICU Antibiotics and Outcomes Trial

NCT03997266
View directory record Official record
Conditions
Microbial Colonization, Extreme Prematurity, Early-Onset Neonatal Sepsis, Late-Onset Neonatal Sepsis, Necrotizing Enterocolitis of Newborn, Death; Neonatal
Interventions
Ampicillin, Gentamycin, Normal saline
Drug
Lead sponsor
Michael Morowitz
Other
Eligibility
Up to 4 Hours
Enrollment
359 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
14
States / cities
Mobile, Alabama • San Diego, California • New Haven, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Food DNA Digestion

NCT06687226
View directory record Official record
Conditions
Digestion Rate
Interventions
Reconstitutable food powder
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 7, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Completed No phase listed Observational

Deciphering the Mechanisms Involved in Microbial Translocation Across the Spectrum of HCV Associated Liver Fibrosis

NCT02400216
View directory record Official record
Conditions
Cirrhosis
Interventions
dual cholate
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Completed Not applicable Interventional Accepts healthy volunteers

Impacts of Fruit on the Gut Health and Human Health

NCT05063929
View directory record Official record
Conditions
Cardiometabolic Health, Healthy Aging, Cognition
Interventions
Fruit (2 cup eq), Fruit restriction (1/2 cup eq)
Other
Lead sponsor
San Diego State University
Other
Eligibility
30 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Nov 15, 2026, 4:42 AM EST
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pulses Consumption and Its Role in Managing Systemic Inflammation, Insulin Sensitivity and Gut Microbiome in Human

NCT04267705
View directory record Official record
Conditions
Insulin Sensitivity, Overweight or Obesity, Inflammatory Response
Interventions
Control, Black bean, Chickpea
Other
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Nov 15, 2026, 4:42 AM EST
Not listed Not applicable Interventional Accepts healthy volunteers

Garden-fresh Foods and Gut Microbiomes

NCT06506786
View directory record Official record
Conditions
Gut Microbiome
Interventions
Garden-fresh Produce, Supermarket Produce
Other
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 17, 2024 · Synced Nov 15, 2026, 4:42 AM EST