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ClinicalTrials.gov public records Last synced Oct 26, 2026, 5:09 AM EDT

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Showing 961–984 of 1,015 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Microbiome Clear all
Completed Not applicable Interventional

Enteral Nutrition Tolerance and the Gut Microbiome Study

NCT03795870
View directory record Official record
Conditions
Enteral Feeding Intolerance
Interventions
Polymeric Tube Feeds, Blenderized Tube Feeds
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Roles of Gut Microbiome in UTI Susceptible Women

NCT05065008
View directory record Official record
Conditions
Healthy
Interventions
Cranberry juice, Apple juice
Other
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
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 Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analyzing IBS to Identify Biomarkers and Microbiome Signatures

NCT02419963
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 7, 2017 · Synced Oct 26, 2026, 5:09 AM 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 26, 2026, 5:09 AM EDT
Completed No phase listed Observational

Sinusitis in Children and the Nasopharyngeal Microbiome

NCT01492868
View directory record Official record
Conditions
Sinusitis
Interventions
Not listed
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years to 7 Years
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
2
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

TRE: Microbiome, Metabolic Health and Bone

NCT05548517
View directory record Official record
Conditions
Weight Loss, Time Restricted Feeding, Bone Loss
Interventions
Time Restricted Eating (TRE), Calorie Restriction
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
50 Years to 79 Years · Female only
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Enrolling by invitation Phase 1 Interventional

Fecal Microbiome Transplant

NCT02636517
View directory record Official record
Conditions
Clostridium Difficile, Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis
Interventions
Fecal Microbiota Transplant
Biological
Lead sponsor
Judith Kelsen
Other
Eligibility
3 Years to 21 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Influence of Short-Term Antibiotic Therapy on Exercise

NCT05961189
View directory record Official record
Conditions
Gastrointestinal Microbiome, Exercise
Interventions
Azithromycin
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
2
States / cities
Fort Collins, Colorado • New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Phase 2 Interventional

Multi-Center Study of Panosyl-Isomaltooligosaccharides Adjunctive to PPI Therapy to Treat GERD

NCT05556824
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
MHS-1031, Placebo
Drug · Other
Lead sponsor
Microbiome Health Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
18
States / cities
Phoenix, Arizona • Los Angeles, California • Lake City, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Completed No phase listed Observational

Microbiome and Immunologic Analysis - Women With Endometriosis

NCT04159740
View directory record Official record
Conditions
Endometriosis
Interventions
Tissue and blood collection
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Aronia Berry Consumption on Inflammation, Metabolites, and the Gut Microbiome

NCT05255718
View directory record Official record
Conditions
Inflammation, Metabolic Disorder, Hypertriglyceridemia
Interventions
Aronia juice, Placebo
Dietary Supplement · Other
Lead sponsor
Montana State University
Other
Eligibility
18 Years to 60 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated Mar 13, 2024 · Synced Oct 26, 2026, 5:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neonatal Microbiome Validity Study

NCT02655250
View directory record Official record
Conditions
Gut Microbiome
Interventions
Microbiome
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
Not listed
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Oct 26, 2026, 5:09 AM EDT
Active, not recruiting Not applicable Interventional

The Beans to Enrich the Gut Microbiome vs. Obesity's Negative Effects (BE GONE) Trial

NCT02843425
View directory record Official record
Conditions
Colorectal Cancer Prevention
Interventions
Regular Diet, Navy Beans (Canned)
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
30 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Not listed Not applicable Interventional

Viome Precision Nutritional Programs to Improve Clinical Outcomes for Mental Health Disorders

NCT06502717
View directory record Official record
Conditions
Mental Health Issue, Depression, Anxiety
Interventions
VIOME Precision Nutrition Program
Combination Product
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tolerability Study of Panosyl-Isomaltooligosaccharides (PIMO) and a Placebo in Subjects With Heartburn

NCT05363618
View directory record Official record
Conditions
Heartburn
Interventions
Panosyl-isomaltooligosaccharides (PIMO) 1g (1.4 ml), Placebo 1.4 ml
Dietary Supplement · Other
Lead sponsor
Microbiome Health Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Manassas, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Hmong Microbiome ANd Gout, Obesity, Vitamin C (HMANGO-C)

NCT04938024
View directory record Official record
Conditions
Hyperuricemia, Gout
Interventions
Vitamin C
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 7, 2023 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional

Effect of Prolonged Nightly Fasting on Immunotherapy Outcomes in HNSCC - Role of Gut Microbiome

NCT05083416
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Prolonged Nightly Fasting, Regular Eating pattern
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Greens-Based Crossover Trial to Improve Epigenetic Aging in Adults

NCT06537232
View directory record Official record
Conditions
Aging
Interventions
Greens-based Supplement
Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
50 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional

Prebiotics in the Parkinson's Disease Microbiome

NCT04512599
View directory record Official record
Conditions
Parkinson Disease
Interventions
Prebiotic Bar
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Oct 26, 2026, 5:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

High Fructose Diet, the Gut Microbiome, and Metabolic Health

NCT06329544
View directory record Official record
Conditions
MASLD, Type 2 Diabetes, Obesity
Interventions
Fructose, glucose
Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
25 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 26, 2026, 5:09 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Quest to Analyze One Thousand Humans Meditating

NCT06583395
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis (ALS), Angina, Stable, Anxiety, Asthma, Atrial Fibrillation, Cancer Brain, Cancer, Breast, Cancer Colon, Cancer, Lung, Cancer, Ovarian, Cancer Prostate, Cancer Skin, Throat Cancer, Lymphoma, Cancer, Thyroid, Cancer, Other, Cerebral Palsy, Chronic Fatigue Syndrome, Cluster Headache, Chronic Obstructive Pulmonary Disease (COPD), Chronic Kidney Diseases, Crohn Disease, Deafness, Depression, Diabetes, Eczema, Epilepsy, Fibroids, Fibromyalgia, Heart Failure, Hypertension, Hyperthyroidism, Hypothyroidism, Irritable Bowel Syndrome (IBS), Infertility, Lyme Disease, Macular Degeneration, Migraine, Multiple Allergies, Multiple Sclerosis, Osteoarthritis, Osteoporosis, Ovarian Cysts, Parkinson Disease, Phantom Limb Pain, Psoriasis, Post Traumatic Stress Disorder (PTSD), Rheumatoid Arthritis, Sjogrens Disease, Spinal Cord Injury, Spinal Stenosis, Stroke, Tension Headache, Tinnitus, Ulcerative Colitis
Interventions
Advanced multi-component meditation practice
Behavioral
Lead sponsor
Tobias Moeller-Bertram
Industry
Eligibility
21 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Palm Desert, California
Source: ClinicalTrials.gov public record
Updated Nov 1, 2024 · Synced Oct 26, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of MicroBial Metabolites After Eating Refined Food

NCT04308473
View directory record Official record
Conditions
Dietary Habits
Interventions
Ultra-processed Food Meal, Whole Food Meal
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 26, 2026, 5:09 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Mapping the Shift Worker's Microbiome

NCT03221517
View directory record Official record
Conditions
Healthy
Interventions
Standardized meal with a glucose challenge test
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
40 Years to 59 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 23, 2026 · Synced Oct 26, 2026, 5:09 AM EDT