Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 3, 2026, 1:25 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 166 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: prebiotic Clear all
Terminated Not applicable Interventional

Enteral Feeding Study of Formula Containing Fish Oil in Critical Care Setting

NCT00421941
View directory record Official record
Conditions
Trauma, Tube Feeding
Interventions
Tube feeding
Procedure
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 31, 2013 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional

Tolerability Study of a Novel Microbiome Therapeutic in Subjects With Gastroesophageal Reflux Disease

NCT04491734
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
maltosyl-isomalto-oligosaccharides (MIMO)
Dietary Supplement
Lead sponsor
ISOThrive Inc.
Industry
Eligibility
25 Years to 75 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Manassas, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 29, 2021 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Phase 2 Interventional

Neoadjuvant Immune Checkpoint Blockade + a Prebiotic Food-enriched Dietary Intervention to Optimize Immune Response in Melanoma: NEO-PreFED

NCT06548789
View directory record Official record
Conditions
Melanoma
Interventions
Prebiotic Xnack Packouts
Dietary Supplement
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 3, 2026, 1:25 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 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional

Effects of Prebiotics on Gut Microbiome in Patients Undergoing HSCT

NCT04629430
View directory record Official record
Conditions
Multiple Myeloma, Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, Non Hodgkin Lymphoma, Acute Lymphocytic Leukemia, Hodgkin Lymphoma, Hodgkin Disease, Myelofibrosis, Myelodysplastic Syndromes, Myeloproliferative Neoplasm, Sickle Cell Disease, Mantle Cell Lymphoma
Interventions
Pre-biotic foods/drinks
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 3, 2023 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women

NCT06544954
View directory record Official record
Conditions
Arterial Stiffness, Blood Pressure, Dysbiosis, Inflammation, Permeability; Increased
Interventions
Freeze-dried grape powder, Placebo powder
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Time Restricted Eating With or Without a Fiber Supplement for Weight Management in Pediatric Cancer Survivors

NCT05826184
View directory record Official record
Conditions
Weight, Body
Interventions
Time restircted eating, Time restricted eating + prebiotic
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 39 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mercury Metabolism by Bacteria in Humans

NCT04060212
View directory record Official record
Conditions
Mercury--Toxicology
Interventions
Tuna fish, prebiotic
Other · Dietary Supplement
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 80 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Sep 3, 2026, 1:25 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Multiomic Signatures of Microbial Metabolites Following Prebiotic Fiber Supplementation

NCT03925597
View directory record Official record
Conditions
Prebiotics
Interventions
Fiber cycles ARM 1, Fiber cycles ARM 2, Fiber cycles ARM 3, Fiber cycles ARM 4, Fiber cycles ARM 5, Fiber cycles ARM 6, Fiber cycles ARM 7, Fiber cycles ARM 8, Fiber cycles ARM 9, Fiber cycles ARM 10, Fiber cycles ARM 11, Fiber cycles ARM 12, Fiber cycles ARM 13, Fiber cycles ARM 14, Fiber cycles ARM 15, Fiber cycles ARM 16, Fiber cycles ARM 17, Fiber cycles ARM 18, Fiber cycles ARM 19, Fiber cycles ARM 20, Fiber cycles ARM 21, Fiber cycles ARM 22, Fiber cycles ARM 23, Fiber cycles ARM 24
Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 99 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Not applicable Interventional

Microbiome Modulation With Prebiotics in PTSD and Cirrhosis

NCT06464952
View directory record Official record
Conditions
Cirrhosis, PTSD
Interventions
Resistant potato starch, Powdered cellulose
Dietary Supplement
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Active, not recruiting Phase 2 Interventional

Impact of a Prebiotic Food-enriched Diet (PreFED) in Combination With Ipilimumab/Nivolumab Combination Immune Checkpoint Blockade (ICB) in ICB-refractory Melanoma Patients

NCT06250335
View directory record Official record
Conditions
ICB-refractory Melanoma
Interventions
Prebiotic Food-Enriched Diet, Ipilimumab, Nivolumab
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Phase 2 Interventional

Prebiotic Food-enriched Diet (PreFED) to Enhance the Microbiome and Response to First-line Immunotherapy in Unresectable Melanoma

NCT06466434
View directory record Official record
Conditions
Unresectable Melanoma
Interventions
Prebiotic Food-Enriched Diet
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Synbiotic Supplement on Metabolic & Cognitive Outcomes Among Older Adults

NCT06845995
View directory record Official record
Conditions
Older Adults, Bioelectrical Impedance, Appetite Hormones, Metabolic Health, Body Composition Measurement, Cognitive Health
Interventions
Synbiotic supplement
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
65 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Synbiotics as Adjuvant to Influenza Vaccine in Elderly

NCT01304771
View directory record Official record
Conditions
Influenza
Interventions
Synbiotic AKSB
Biological
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 19, 2012 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate the Efficacy of Poppi Apple Cider Vinegar Prebiotic Soda to Improve Gut Health In Participants

NCT05418439
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Drink Poppi Soda
Dietary Supplement
Lead sponsor
Drink Poppi
Industry
Eligibility
18 Years to 45 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2022 · Synced Sep 3, 2026, 1:25 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 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional

Effect of a Comprehensive Nutrition Support Product on the Nutritional Status of Adults With Inflammatory Bowel Disease

NCT02801240
View directory record Official record
Conditions
Colitis, Ulcerative, Crohn's Disease
Interventions
Nutrition support product
Other
Lead sponsor
National University of Natural Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 13, 2018 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Assessing the Short-Term Effects of Multi-Fiber Supplementation on Gut Health

NCT07787026
View directory record Official record
Conditions
Mixed Fiber Supplementation for Healthy Adults
Interventions
Prebiotic, Placebo
Dietary Supplement
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Impact of Oligosaccharides and Bifidobacteria on the Intestinal Microflora of Premature Infants

NCT00810160
View directory record Official record
Conditions
Fecal Microflora in the Formula Fed Premature Infant
Interventions
ProlactPlus, GOS galacto-oligosaccharides, Bifidobacterium infantis, Bifidobacterium animalis
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
Not listed
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

What's Hopping? Cricket Protein and Human Gut Microbiota

NCT03383341
View directory record Official record
Conditions
Healthy
Interventions
Cricket Protein Powder, Placebo control
Dietary Supplement · Other
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 3, 2019 · Synced Sep 3, 2026, 1:25 PM EDT
Recruiting Not applicable Interventional

Impact of Prebiotics in Ulcerative Colitis

NCT06495658
View directory record Official record
Conditions
Crohn Disease, Ulcerative Colitis
Interventions
Prebiotic
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 85 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 3, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Microbiome and Resilience to Sleep and Circadian Disruption

NCT03747367
View directory record Official record
Conditions
Sleep Deprivation, Circadian Dysregulation, Stress
Interventions
Insufficient Sleep, Prebiotic, Placebo
Behavioral · Dietary Supplement
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
18 Years to 45 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 3, 2026, 1:25 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 3, 2026, 1:25 PM EDT
Completed Phase 2 Interventional Results available

Prebiotics and Metformin Improve Gut and Hormones in Type 2 Diabetes in Youth (MIGHTY-fiber)

NCT04209075
View directory record Official record
Conditions
Diabetes
Interventions
Biomebliss, Metformin, Placebo
Dietary Supplement · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
10 Years to 25 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 29, 2022 · Synced Sep 3, 2026, 1:25 PM EDT