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ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:58 PM EDT

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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Fiber supplements Clear all
Completed Not applicable Interventional

Dietary Fiber for Fecal Incontinence

NCT01738607
View directory record Official record
Conditions
Fecal Incontinence
Interventions
Psyllium, Gum Arabic, carboxymethylcellulose, Placebo
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Oct 21, 2026, 10:58 PM EDT
Active, not recruiting Early Phase 1 Interventional

The Gut, Liver And Metabolome in Human Immunodeficiency Virus and Non Alcoholic Fatty Liver Disease

NCT06113003
View directory record Official record
Conditions
HIV, Non-Alcoholic Fatty Liver Disease, Metabolic-Associated Steatotic Liver Disease
Interventions
Prebiotic, Probiotic
Dietary Supplement
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 89 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Oct 21, 2026, 10:58 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 8, 2024 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Supplements on Stress Markers

NCT05592561
View directory record Official record
Conditions
Physiological Stress
Interventions
mental stress task
Other
Lead sponsor
Texas State University
Other
Eligibility
18 Years to 40 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

Extension Family Lifestyle Intervention Project (E-FLIP for Kids)

NCT01820338
View directory record Official record
Conditions
Obesity
Interventions
Behavioral Child Tx Contacts, Behavioral Parent-Tx Contacts, Dietary and Physical Activity Information
Behavioral · Other
Lead sponsor
University of Florida
Other
Eligibility
8 Years to 12 Years
Enrollment
314 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 20, 2015 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

Prebiotics, Gut Microbiota, and Cardiometabolic Health

NCT02346838
View directory record Official record
Conditions
Prediabetes
Interventions
Inulin, Placebo
Dietary Supplement
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 21, 2026, 10:58 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 3, 2025 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

Effect of Gum Arabic on Gastrointestinal Transit and Permeability

NCT03742076
View directory record Official record
Conditions
Diverticulitis
Interventions
High-dose prebiotic, Low-dose prebiotic, Placebo
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 10, 2023 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Whey Protein Supplements on Markers of Exercise-induced Muscle Damage in Resistance-trained Individuals

NCT05100459
View directory record Official record
Conditions
Muscle Damage, Muscle Soreness
Interventions
Pasture-raised whey protein, Conventional whey protein, Placebo
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 40 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 21, 2026, 10:58 PM EDT
Active, not recruiting Not applicable Interventional

Prebiotic Treatment in People With Schizophrenia

NCT05527210
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Prebiotic, Placebo Prebiotic
Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

BCAA Supplemental Study

NCT03339232
View directory record Official record
Conditions
Cirrhosis
Interventions
BCAA Supplement, Physical Activity
Dietary Supplement · Other
Lead sponsor
Loyola University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 24, 2020 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of a Prebiotic and Probiotic Supplement to Provide Relief From Symptoms Associated With Bacterial Vaginosis and Yeast Infections.

NCT06665126
View directory record Official record
Conditions
Bacterial Vaginosis, Yeast Infection
Interventions
Prebiotic + Probiotic Supplement, Active Placebo Supplement, Excipient Placebo Supplement
Dietary Supplement
Lead sponsor
Happy V
Industry
Eligibility
25 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 21, 2026, 10:58 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Efficacy of Four Supplements on Improving Readiness for Intimacy

NCT05862519
View directory record Official record
Conditions
Libido, Intimacy, Gastrointestinal Issues
Interventions
Reset, Stay Ready Fiber, Libido, Testosterone supplement
Dietary Supplement
Lead sponsor
906 CMVI Holdings
Industry
Eligibility
18 Years to 44 Years · Male only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 17, 2023 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fiber and Fish Oil Supplements for the Prevention of Colorectal Cancer

NCT04211766
View directory record Official record
Conditions
Healthy Subject
Interventions
Dietary Fiber, Fish Oil, Comparator
Dietary Supplement · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
50 Years to 75 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 27, 2024 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Zinc Supplementation to Reduce Diarrhea Rates in Adults in Western Kenya.

NCT01166815
View directory record Official record
Conditions
Diarrhea, Malaria
Interventions
Zinc sulphate, Placebo
Dietary Supplement · Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 55 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Natick, Massachusetts • Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 22, 2010 · Synced Oct 21, 2026, 10:58 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 24, 2026 · Synced Oct 21, 2026, 10:58 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

L. Acidophilus (Strain TW01) on Gut Health, Body Composition, and Inflammation

NCT06912100
View directory record Official record
Conditions
Overweight (BMI > 25), Obese, Otherwise Healthy Volunteers
Interventions
Placebo, Probiotic
Dietary Supplement
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 21, 2026, 10:58 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Supplements for Controlling Resistance to Insulin

NCT00699413
View directory record Official record
Conditions
Obesity, Diabetes Mellitus, Type 2
Interventions
nutrition education plus active supplement, nutrition education plus inactive supplement
Drug
Lead sponsor
University of Southern California
Other
Eligibility
13 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2024 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Melatonin-Micronutrients for Osteopenia Treatment Study

NCT01870115
View directory record Official record
Conditions
Osteoporosis, Osteopenia
Interventions
Fiber Pill, Melatonin, Strontium citrate, Vitamins D3 and K2
Dietary Supplement
Lead sponsor
Duquesne University
Other
Eligibility
Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 14, 2018 · Synced Oct 21, 2026, 10:58 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 27, 2026 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional

Prebiotic vs Probiotic in Multiple Sclerosis

NCT04038541
View directory record Official record
Conditions
Multiple Sclerosis, Clinically Isolated Syndrome (CIS)
Interventions
Prebiotics (Prebiotin Prebiotic Fiber Stick Pac), Probiotics (Visbiome®)
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
New York, New York • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluate the Effects of Repeated Periods of Modified Fasting to Support Healthy Natural Weight Management and Prevention of Weight Gain

NCT03372109
View directory record Official record
Conditions
Body Weight Changes
Interventions
Meal replacement shake, Multivitamin and mineral capsules, Fish oil with sesame lignans and olive extract softgel, Prebiotic Chewable tablet, Clove Extract and Maqui Berry extract capsule, .Whole Food Blend capsule, Turmeric extract capsule, European White Kidney Bean capsule, Saffron extract capsule, Ubiquinol with Fulvic acid complex softgel, Calcium with Hesperidin and gynostemma extract tablet, Multivitamin and mineral supplement
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2018 · Synced Oct 21, 2026, 10:58 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 26, 2025 · Synced Oct 21, 2026, 10:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Prebiotics on Cognition and Health

NCT04551937
View directory record Official record
Conditions
Physiological Stress, Cognitive Change, Gastrointestinal Health
Interventions
Lactose Free 1% Milk, Lactose Free 1% Milk + 10 g prebiotic
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
25 Years to 45 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 21, 2026, 10:58 PM EDT