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Showing 1–24 of 166 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Prebiotics Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Commercially Available Synbiotic on the Gut Microbiome and Cardiometabolic Health

NCT07515443
View directory record Official record
Conditions
Hypertension, Gut Dysbiosis, Overweight , Obesity
Interventions
Synbiotic, Placebo
Dietary Supplement
Lead sponsor
Southern Utah University
Other
Eligibility
18 Years to 60 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Cedar, Utah
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Novel Nutritional Product on Nutrient Gaps and Gut Health in Adults With Occasional Gastrointestinal Issues

NCT06564285
View directory record Official record
Conditions
Gastrointestinal Microbiome, Nutrition, Healthy
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Phase 2 Interventional

PRebiotic to IMprovE Calcium Absorption

NCT03272542
View directory record Official record
Conditions
Obesity
Interventions
Prebiotic: soluble corn fiber, Placebo: maltodextrin
Dietary Supplement
Lead sponsor
San Francisco Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 75 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Sep 6, 2026, 2:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Gastrointestinal And Metabolic Effects From a Prebiotic, Lifting, and Aerobic iNtervention

NCT05207488
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Fructooligosaccharides (FOS), Exercise, Placebo
Dietary Supplement · Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
20 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Measuring Effects of Prebiotics on Human Behavior and Cognition

NCT04055246
View directory record Official record
Conditions
Prebiotics and Human Behavior and Cognition
Interventions
Inulin, Placebo (maltodextrin)
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
18 Years to 35 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 2, 2022 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional

Study to Assess Safety and Effect of a Prebiotic Fiber Meal Replacement Shake in Individuals With Type 2 Diabetes

NCT05110703
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Supergut, Placebo, Dietary guidelines
Dietary Supplement · Other
Lead sponsor
Uplifting Results Labs Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2022 · Synced Sep 6, 2026, 2:59 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Clinical Study to Assess the Effects of Prebiotic and Probiotic Supplement

NCT06794619
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 50 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Placebo-Controlled Study Evaluating the Effects of Arrabina on Satiety in Healthy Adults

NCT06884449
View directory record Official record
Conditions
Satiety, Appetite Regulation, Weight Control
Interventions
Arrabina Prebiotic 5.0 g, Arrabina Prebiotic 3.5 g, Placebo
Dietary Supplement · Other
Lead sponsor
Comet Bio Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
3
States / cities
Hileah, Florida • Tampa, Florida • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of the Ability of a Supplement to Increase Good Bacteria in the Human Intestine and Blood Sugar Levels

NCT01944904
View directory record Official record
Conditions
Pre-diabetic
Interventions
Sugar Pill, XOS 2.8
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
20 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional

Prebiotic in Preterm Infants

NCT03306316
View directory record Official record
Conditions
Preterm Infant, Development, Infant, Nutrition
Interventions
Prebiotic, Dextrose Control
Dietary Supplement
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
7 Days to 10 Days
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 7, 2024 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Phage 3Determination of Phage/Probiotic Synergistic Effects on Gastrointestinal Health

NCT05750433
View directory record Official record
Conditions
Gastrointestinal Dysfunction
Interventions
PreforPro+B. subtilis DE111 probiotics, Placebo, B. subtilis DE111
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 26, 2024 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Proprietary Dietary Supplement on Fecal Volatile Organic Compounds

NCT02871596
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Flavonoids, Flavonoids+Prebiotics
Other · Dietary Supplement
Lead sponsor
Pharmanex
Industry
Eligibility
18 Years to 70 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Logan, Utah
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Sep 6, 2026, 2:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Flourish: Exploring the Early Infant Gut Microbiome

NCT07333482
View directory record Official record
Conditions
Microbiota, Gut Microbiome, Eczema, Microbiome
Interventions
Tailored Recommendations, Consult Call, Educational Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Open Label Single Arm Prebiotic Pilot Trial SR001

NCT07127120
View directory record Official record
Conditions
PARKINSON DISEASE (Disorder)
Interventions
Prebiotic fiber blend
Dietary Supplement
Lead sponsor
Sorridi Therapeutics
Industry
Eligibility
60 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Northbrook, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Recruiting Phase 2 Interventional

5-strain Probiotic Formulation in HR-positive Breast Cancer Receiving Aromatase Inhibitor to Prevent Bone Loss

NCT07044310
View directory record Official record
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Hormone Receptor-Positive Breast Carcinoma
Interventions
Biospecimen Collection, Bone Mineral Density Test, Questionnaire Administration, WBF-038
Procedure · Other · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Synbiotic on the Gut Microbiota and Adiposity-related Markers in Healthy Overweight Subjects

NCT02151825
View directory record Official record
Conditions
Gut Microbiota, Adiposity
Interventions
Synbiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Texas State University, San Marcos
Other
Eligibility
18 Years to 64 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2014 · Synced Sep 6, 2026, 2:59 PM EDT
Terminated Phase 2 Interventional

Use of Novel Prebiotic Fiber for Targeted Dietary Management of Irritable Bowel Syndrome (Nutrabiotix Phase II)

NCT02144753
View directory record Official record
Conditions
Constipation-predominant IBS (IBS-C)
Interventions
NTX-1, psyllium (15 g)
Dietary Supplement · Drug
Lead sponsor
Nutrabiotix, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 1, 2016 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Pinpoint Trial: Prebiotics IN Peanut Oral ImmunoTherapy

NCT05138757
View directory record Official record
Conditions
Peanut Allergy
Interventions
Prebiotic, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
4 Years to 17 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Chicago, Illinois • Hyde Park, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Recruiting Not applicable Interventional

Study Using Prebiotics to Improve Gut Microbiome Diversity After Autologous Cellular Therapy

NCT05135351
View directory record Official record
Conditions
Multiple Myeloma, Lymphoma
Interventions
Resistant Starch, Maltodextrin
Dietary Supplement
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 6, 2026, 2:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Symbiotic Use in Post-Bariatric Surgery Patients

NCT06252558
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Symbiotic, Placebo
Dietary Supplement
Lead sponsor
University of North Florida
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Sep 6, 2026, 2:59 PM EDT
Completed No phase listed Observational

Schizophrenia and the Gut Microbiome

NCT02921243
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Not listed
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 18, 2019 · Synced Sep 6, 2026, 2:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Gut-Brain Axis During Neurorehabilitation; Prebiotic Treatment to Alter the Gut Microbiome and Neurologic Symptoms

NCT06607523
View directory record Official record
Conditions
Brain Injuries
Interventions
Inulin
Dietary Supplement
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Sep 6, 2026, 2:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Behavior of Infants Fed Formula Supplemented With Prebiotics

NCT02757924
View directory record Official record
Conditions
Gastrointestinal Tolerance
Interventions
Infant formula supplemented with prebiotics
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
7 Days to 42 Days
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
11
States / cities
Dothan, Alabama • Pensacola, Florida • St. Petersburg, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2017 · Synced Sep 6, 2026, 2:59 PM EDT
Not listed Not applicable Interventional

Prebiotics in Rectal Cancer

NCT05516641
View directory record Official record
Conditions
Rectal Cancer
Interventions
Soluble Corn Fiber, Maltodextrin
Dietary Supplement
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 30, 2023 · Synced Sep 6, 2026, 2:59 PM EDT