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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Microbiome Capsule Clear all
Not yet recruiting Phase 2 Interventional

Herbal Supplement (Biocidin REMOVE) for Bacterial Overgrowth in Irritable Bowel Syndrome

NCT07768267
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS), Small Intestinal Bacterial Overgrowth Syndrome (SIBO)
Interventions
Biocidin REMOVE, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Recruiting Not applicable Interventional

Viome Nutritional Programs to Improve Clinical Outcomes for Gastrointestinal Conditions

NCT05465629
View directory record Official record
Conditions
Gastrointestinal Health
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis and CVD Risk

NCT04431960
View directory record Official record
Conditions
Postmenopausal Osteoporosis, Gut Microbiota, Cardiovascular Diseases
Interventions
blackcurrant (BC) extract
Drug
Lead sponsor
University of Connecticut
Other
Eligibility
45 Years to 60 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 11, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Phase 2 Interventional

Colchicine to Suppress Inflammation and Improve Insulin Resistance in Adults and Adolescents With Obesity

NCT05017571
View directory record Official record
Conditions
Obesity, Insulin Resistance, Inflammation
Interventions
Colchicine, Placebo
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
12 Years to 100 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional

Pilot Study Lp299v Supplementation in Chronic Heart Failure

NCT05752760
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, Heart Failure, Systolic, Heart Failure With Preserved Ejection Fraction, Heart Failure, Diastolic
Interventions
Lactobacillus Plantarum 299v Freeze Dried Capsule, Freeze Dried Potato Starch Capsule
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
21 Years to 89 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gene Expression, Metabolomic, Microbiome, and Calcium Metabolism in Response to Varied Vitamin D Dosages

NCT02856776
View directory record Official record
Conditions
Vitamin D Insufficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
18 Years to 50 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 17, 2019 · Synced Sep 17, 2026, 1:19 AM EDT
Not listed Not applicable Interventional

Viome Nutritional Programs to Improve Clinical Outcomes for Mental Health Conditions

NCT05563857
View directory record Official record
Conditions
Mental Health, Depression, Anxiety
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Monosodium Glutamate on Microbiome-Derived Imidazole Propionate Production in Healthy Volunteers

NCT07700368
View directory record Official record
Conditions
Healthy Adult
Interventions
L-histidine, Monosodium glutamate (MSG), Sodium chloride (NaCl)
Dietary Supplement
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Alcoholic Liver Disease and the Gut Microbiome

NCT05007470
View directory record Official record
Conditions
Alcohol Use Disorder, Alcoholic Liver Disease, Microbiome
Interventions
VSL #3 112.5 Capsule, Placebo
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 5, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Recruiting Phase 1Phase 2 Interventional

COffee and Metabolites Modulating the Gut MicrobiomE in Colorectal caNCER

NCT05692024
View directory record Official record
Conditions
Colorectal Cancer, Coffee, Gastrointestinal Microbiome, Stenosis, Fibrosis, Liver, Ultrasound Elastography, Proton Magnetic Resonance Spectroscopy
Interventions
Nestlé NESCAFÉ® TASTER'S CHOICE® House Blend capsule., Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Gut Microbiome Response to Long-Haul Travel in Elite Football Players

NCT07585474
View directory record Official record
Conditions
Microbial Composition, Immune Function
Interventions
Probiotic Capsule, Placebo
Drug
Lead sponsor
Sheffield Hallam University
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of Cinnamon Spice on Glucose Tolerance in Subjects With Pre-diabetes

NCT04342624
View directory record Official record
Conditions
PreDiabetes, Blood Glucose, High
Interventions
Cinnamon, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
20 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Oral Fructanase Administration on Gastrointestinal Symptoms After Inulin Challenge in Healthy Adults

NCT06628869
View directory record Official record
Conditions
Digestive Health, Gastrointestinal Health, FODMAP Intolerance, Food Sensitivity
Interventions
Fructanase, Maltodextrin placebo
Dietary Supplement
Lead sponsor
BIO-CAT, Inc.
Industry
Eligibility
20 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 9, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MiCrobiome dieT Study

NCT03610477
View directory record Official record
Conditions
Healthy
Interventions
Medium chain triglycerides, Long chain triglycerides
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Phase 2 Interventional Results available

Impact of Probiotics on Urinary Symptoms in Spinal Cord Injury SCI and SB

NCT02748317
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
Lactobacillus rhamnosus GG
Drug
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 11, 2020 · Synced Sep 17, 2026, 1:19 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effects of GlutenShield, a Prebiotic, Probiotic, and Enzyme Supplement, on the Gut Microbiome of Adults With GI Symptoms

NCT03403387
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 Sep 17, 2026, 1:19 AM EDT
Not listed Not applicable Interventional

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

NCT06190184
View directory record Official record
Conditions
Mental Health Issue, Mental Health Disorder, Mental Health, Depression, Depression, Anxiety, Anxiety, Anxiety Disorders, Anxiety Depression, Anxiety State
Interventions
VIOME Precision Nutrition Program, Control arm
Combination Product · Other
Lead sponsor
Viome
Industry
Eligibility
25 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 4, 2024 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Microbiome Effect of Omadacycline on Healthy Volunteers

NCT06030219
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Omadacycline, Vancomycin Pill, Moxifloxacin
Drug
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 40 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison Study of Manapol and DaltonMax on Immune Function, Microbiome, and Related Variables in Men and Women

NCT05510050
View directory record Official record
Conditions
Microbiome, Immune Function
Interventions
Aloe Vera Extract 1, Control, Aloe Vera Extract 2
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Sep 17, 2026, 1:19 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females

NCT07365514
View directory record Official record
Conditions
Postmenopausal Osteoporosis, Gut Microbiome, Menopause
Interventions
Blackcurrant (BC) extract, Placebo
Drug
Lead sponsor
University of Connecticut
Other
Eligibility
45 Years to 70 Years · Female only
Enrollment
159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Precision Microbiota Interventions for Senoreduction Trial

NCT07462767
View directory record Official record
Conditions
HIV Infections, Alcohol Drinking, Aging, Immunosenescence
Interventions
Limosilactobacillus reuteri, Blueberry extract
Dietary Supplement
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
40 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional

Placebo-Controlled Clinical Nutrition Study of the Safety and Metabolic Effects of Two Medical Foods in Type 2 Diabetes

NCT03893422
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
WB-010, WB-011, Placebo
Other
Lead sponsor
Pendulum Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
5
States / cities
Torrance, California • Tustin, California • Youngstown, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2020 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Influence of Oral Probiotics on the Microbiome and Lipidome

NCT03605108
View directory record Official record
Conditions
Gut Microbiome, Skin Microbiome, Gut Lipidome, Skin Lipidome, Blood Lipidome
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2019 · Synced Sep 17, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotics Effect on the Female Urinary Microbiome ProFUM Trial (Probiotics Effect on the Female Urinary Microbiome)

NCT03250208
View directory record Official record
Conditions
Healthy
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Loyola University
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 31, 2019 · Synced Sep 17, 2026, 1:19 AM EDT