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ClinicalTrials.gov public records Last synced Oct 26, 2026, 10:22 PM EDT

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Showing 73–96 of 438 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: probiotic Clear all
Completed Phase 2Phase 3 Interventional Results available

Impact of Emergency Department Probiotic (LGG) Treatment of Pediatric Gastroenteritis

NCT01773967
View directory record Official record
Conditions
Gastroenteritis
Interventions
LGG, micro-crystalline cellulose
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
3 Months to 48 Months
Enrollment
971 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
10
States / cities
Sacramento, California • Washington D.C., District of Columbia • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 6, 2019 · Synced Oct 26, 2026, 10:22 PM EDT
Recruiting Not applicable Interventional

The GLUCID Study: Effect of Alcohol Reduction and Probiotic Interventions on Cognition and Brain Glucose Metabolism in Normal Aging Adults Who Are High-Risk Alcohol Drinkers

NCT07415707
View directory record Official record
Conditions
Aging, Alcohol Drinking
Interventions
Visbiome, Motivational Interviewing, Placebo
Dietary Supplement · Behavioral · Other
Lead sponsor
University of Miami
Other
Eligibility
65 Years to 84 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Bacillus Subtilis BS50 Supplementation on Gastrointestinal Symptoms in Healthy Adults

NCT05004454
View directory record Official record
Conditions
Gastrointestinal Health, Immune Health, Cardiovascular Health, Digestive Health
Interventions
Bacillus subtilis BS50 spore preparation, Maltodextrin
Dietary Supplement
Lead sponsor
BIO-CAT Microbials, LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 5, 2023 · Synced Oct 26, 2026, 10:22 PM EDT
Completed No phase listed Observational Results available

Dietary Supplement With and Without a Probiotic and/or Antibiotic

NCT05141903
View directory record Official record
Conditions
Healthy Adults
Interventions
Antibiotic, HMO Concentrate, Probiotic, Food Supplement
Dietary Supplement
Lead sponsor
Prolacta Bioscience
Industry
Eligibility
18 Years to 75 Years
Enrollment
92 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2025 · Synced Oct 26, 2026, 10:22 PM EDT
Terminated Phase 1 Interventional

Probiotic Lactobacillus GG to Eliminate VRE Colonization

NCT00756262
View directory record Official record
Conditions
Vancomycin Resistant Enterococcal Colonization
Interventions
Lactobacillus GG or Culturelle
Biological
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 5, 2024 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

NECTAR Study: Nectar (Honey) Effects on Comfort, Thoughts, and Regularity

NCT04187950
View directory record Official record
Conditions
Gastrointestinal Dysfunction, Physiological Stress, Cognition - Other
Interventions
Yogurt with B. lactis and added honey, Yogurt with heat-inactivated B. lactis and added cane sugar
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
22 Years to 64 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2023 · Synced Oct 26, 2026, 10:22 PM EDT
Recruiting Phase 2 Interventional

Synbiotic Compound to Reduce Symptoms of Schizophrenia

NCT04226898
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Synbiotic Supplement, Inert Compound
Biological
Lead sponsor
Sheppard Pratt Health System
Other
Eligibility
18 Years to 65 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Batlimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of a Fiber Supplement on Gut Health

NCT07755735
View directory record Official record
Conditions
Gut Health, Bloating, Irregular Bowel Movements, Gastrointestinal Symptoms
Interventions
Active Supplement, Placebo Comparator
Dietary Supplement
Lead sponsor
Belli Welli Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 26, 2026, 10:22 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Probiotic Supplementation in Optimizing Iron and Hematological Status Among Pregnant Females

NCT07076849
View directory record Official record
Conditions
Iron Deficiency (ID), Pregnancy
Interventions
Lactiplantibacillus plantarum 299v, Placebo Capsule(s)
Dietary Supplement · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 26, 2026, 10:22 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Probiotics for Prevention of Antibiotic Associated Diarrhea and Clostridium Difficile Associated Disease

NCT02076438
View directory record Official record
Conditions
Diarrhea
Interventions
Probiotics
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 89 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 23, 2016 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional

Vaginal Probiotics and Pessaries and Their Impact on the Vaginal Microenvironment

NCT04118049
View directory record Official record
Conditions
Pelvic Organ Prolapse, Inflammatory Response, Dysbiosis
Interventions
BiopHreshTM vaginal probiotic supplement (Good Clean Love, Inc. Eugene, OR) and RestoreTM gel., Standard Care
Other
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 89 Years · Female only
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 25, 2022 · Synced Oct 26, 2026, 10:22 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Control of Colic in Infants by Dietary Supplementation With the Probiotic Lactobacillus Reuteri

NCT01067027
View directory record Official record
Conditions
Colic
Interventions
Lactobacillus reuteri
Dietary Supplement
Lead sponsor
Children's Investigational Research Program, LLC
Other
Eligibility
14 Days to 60 Days
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Bentonville, Arkansas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2011 · Synced Oct 26, 2026, 10:22 PM EDT
Not listed Phase 2Phase 3 Interventional

Probiotic (Visbiome) for Gulf War Illness

NCT03078530
View directory record Official record
Conditions
Gulf War Illness
Interventions
Placebo, Visbiome, VSL#3
Drug
Lead sponsor
Ashok Tuteja
Federal
Eligibility
35 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 13, 2017 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional

Engineering Gut Microbiome to Target Breast Cancer

NCT03358511
View directory record Official record
Conditions
Breast Cancer
Interventions
Probiotic
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 21, 2020 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional

The Effect of Methylated Vitamin B Complex on Depression

NCT01672372
View directory record Official record
Conditions
Depression
Interventions
Max Stress B, Placebo Max Stress B
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 6, 2014 · Synced Oct 26, 2026, 10:22 PM 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 6, 2025 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Bacillus Subtilis R0179 in Healthy Young Adults

NCT01802151
View directory record Official record
Conditions
Healthy
Interventions
B. subtilis R0179, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 17, 2015 · Synced Oct 26, 2026, 10:22 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 20, 2012 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

BacterioPHAGE for Gastrointestinal Health 2 Study

NCT04511221
View directory record Official record
Conditions
Mild Gastrointestinal Symptoms in Healthy Adults
Interventions
Bifidobacterium animals subsp. lactis BL04+PreforPro, Bifidobacterium animals subsp. lactis BL04, Placebo
Dietary Supplement · Other
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 65 Years
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 13, 2020 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tolerability and Functional Assessment of a Novel Children's Synbiotic

NCT04534036
View directory record Official record
Conditions
Constipation, Signs and Symptoms, Digestive Signs and Symptoms, Infrequent or Difficult Evacuation
Interventions
PDS-08, Placebo
Dietary Supplement · Other
Lead sponsor
Seed Health
Industry
Eligibility
3 Years to 17 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 26, 2026, 10:22 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Probiotic Supplementation in Breastfed Newborn Infants

NCT02286999
View directory record Official record
Conditions
Atopic Dermatitis, Food Allergies
Interventions
B. infantis, Placebo
Drug
Lead sponsor
Emanual Maverakis, MD
Other
Eligibility
1 Day to 7 Days
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Nov 15, 2019 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Changes in Plasma Amino Acid Appearance After Adding Bacillus Coagulans GBI-30, 6086 to Milk Protein Concentrate

NCT05313178
View directory record Official record
Conditions
Protein Malabsorption
Interventions
Bacillus Coagulans GBI-30, 6086
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 17, 2024 · Synced Oct 26, 2026, 10:22 PM EDT
Completed Not applicable Interventional Results available

Probiotic Therapy for Children and Adults With Autism Spectrum Disorder

NCT04655326
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
Flore
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
30 Months to 75 Years
Enrollment
296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 26, 2026, 10:22 PM EDT
Recruiting Not applicable Interventional

A Dietary Study for People With Clonal Hematopoiesis

NCT07590804
View directory record Official record
Conditions
Clonal Hematopoiesis
Interventions
high-fiber plant-based meals, fermented foods, supplements, surveys
Other · Dietary Supplement
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 26, 2026, 10:22 PM EDT