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ClinicalTrials.gov public records Last synced Oct 6, 2026, 10:49 AM EDT

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Showing 25–48 of 202 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary Supplement: Probiotics Clear all
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

LpD3.5 Intervention Study in Older Adults- LISA-I Trial

NCT07794956
View directory record Official record
Conditions
Mild Cognitive Impairment (MCI), Cognition, Brain Aging, Microbiome Dysbiosis, Leaky Gut Syndrome, Gut Inflammation, Inflammaging
Interventions
LpD3.5, Placebo
Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
60 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 6, 2026, 10:49 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Gallotannins on the Gut Microbiome and How it Affects Inflammatory Markers Among Obese Individuals.

NCT07505212
View directory record Official record
Conditions
Obesity (Disorder)
Interventions
Gallotannin-rich mango, Lactiplantibacillus pentosus (probiotic), No Treatment Added
Dietary Supplement · Other
Lead sponsor
Prairie View A&M University
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Prairie View, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 6, 2026, 10:49 AM 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 6, 2026, 10:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

The Effects of a Novel Probiotic Supplement on Menopausal Symptoms and Bone Health

NCT04001088
View directory record Official record
Conditions
Menopause
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Lallemand Health Solutions
Industry
Eligibility
40 Years to 59 Years · Female only
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
5
States / cities
Lake Worth, Florida • Port Saint Lucie, Florida • Atlanta, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Oct 6, 2026, 10:49 AM 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 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional

The Effects of Probiotic Supplementation on State and Trait Stress, Anxiety, and Depression Symptoms in Stressed Adults

NCT07216729
View directory record Official record
Conditions
Anxiety Symptoms, Perceived Stress, Depressive Symptoms
Interventions
Lactobacillus reuteri DSM 17938, Placebo
Dietary Supplement · Other
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
18 Years to 45 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Oct 6, 2026, 10:49 AM EDT
Recruiting Early Phase 1 Interventional

Effects of a Probiotic Intervention on the Gut and Vaginal Microbiome in Patients With Advanced or Recurrent Ovarian Cancer Undergoing Treatment With Platinum Chemotherapy

NCT07144826
View directory record Official record
Conditions
Advanced Ovarian Carcinoma, Recurrent Ovarian Carcinoma, Stage II Ovarian Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8
Interventions
Biospecimen Collection, Placebo Administration, Probiotic, Questionnaire Administration
Procedure · Drug · Dietary Supplement + 1 more
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 2 Interventional Results available

Study Of Dacomitinib (PF-00299804) In Advanced NSCLC Patients (Post Chemo Or Select First Line) To Evaluate Prophylactic Intervention On Derm And GI AEs And PRO

NCT01465802
View directory record Official record
Conditions
Non Small Cell Lung Cancer (NSCLC)
Interventions
Dacomitinib, Doxycycline, Probiotic, Alclometasone cream
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
79
States / cities
Duarte, California • Fullerton, California • Irvine, California + 49 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 1 Interventional

Probiotic Ingestion and Isoagglutinin Titers

NCT00891787
View directory record Official record
Conditions
Isoagglutinin-Mediated Hemolysis, Probiotic Toxicity
Interventions
Probiotic Supplement
Dietary Supplement
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 70 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 6, 2017 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of S. Boulardii and Amoxicillin/Clavulanate on Gut Microbiota

NCT01473368
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Saccharomyces boulardii, Amoxicillin Clavulanate
Dietary Supplement · Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Rhamnosus GG ATCC 53103 (LGG) in Healthy Volunteers

NCT00934453
View directory record Official record
Conditions
Healthy
Interventions
Lactobacillus rhamnosus GG ATCC 53103, Placebo
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Placebo Controlled Pilot Study of Probiotic Supplementation in At-risk Pregnant Women

NCT03646487
View directory record Official record
Conditions
Iron-deficiency, Pregnancy, High Risk, Stress, Psychological
Interventions
Probiotic LP299v 10x10 colony forming units in capsule form, Placebo in capsule form
Dietary Supplement · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 7, 2023 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of a Probiotic Strain on Ibuprofen-induced GI Damage

NCT04447924
View directory record Official record
Conditions
Reduction of Small Intestinal Ulceration Risk
Interventions
Bif195, Placebo
Dietary Supplement · Other
Lead sponsor
Chr Hansen
Industry
Eligibility
18 Years to 40 Years
Enrollment
177 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 26, 2021 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Probiotic Supplementation on Exercise Endurance Among Non-elite Athletes

NCT04588142
View directory record Official record
Conditions
Exercise Endurance
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Lallemand Health Solutions
Industry
Eligibility
18 Years to 45 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Oct 6, 2026, 10:49 AM EDT
Withdrawn Not applicable Interventional

Probiotic Use in Patients With Prior COPD Exacerbation

NCT02185092
View directory record Official record
Conditions
COPD, Obstructive Lung Disease
Interventions
Lactobacillus GG, Sugar pill
Dietary Supplement · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 99 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 23, 2017 · Synced Oct 6, 2026, 10:49 AM EDT
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 29, 2026 · Synced Oct 6, 2026, 10:49 AM EDT
Active, not recruiting Not applicable Interventional

Probiotics and Insulin Resistance in Obese Asthmatics

NCT05949255
View directory record Official record
Conditions
Asthma, Obesity, Insulin Resistance
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 99 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 2 Interventional

Probiotics for Clostridium Difficile Infection in Older Adults

NCT01680874
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Probiotics, Immune Function, and the Brain in Alcohol Consumers

NCT05232682
View directory record Official record
Conditions
Alcohol; Use, Problem
Interventions
Seed DS-01 Daily Synbiotic
Dietary Supplement
Lead sponsor
Brown University
Other
Eligibility
18 Years to 64 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulation of Type 1 Diabetes Susceptibility Through the Use of Probiotics

NCT03423589
View directory record Official record
Conditions
Type1diabetes, Type1 Diabetes Mellitus
Interventions
VSL#3
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
5 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Oct 6, 2026, 10:49 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Infant Microbiota and Probiotic Intake Study

NCT02457338
View directory record Official record
Conditions
Healthy
Interventions
Bifidobacterium
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2027
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2025 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Reuteri (L. Reuteri) in Healthy Adults

NCT00922727
View directory record Official record
Conditions
Colic, Gastrointestinal Tract Infections
Interventions
L. reuteri, Sunflower Oil
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 25, 2018 · Synced Oct 6, 2026, 10:49 AM EDT
Completed No phase listed Observational

Observational Study of Kibow Biotics in Chronic Kidney Failure Patients

NCT01450657
View directory record Official record
Conditions
Chronic Kidney Failure
Interventions
Kibow Biotics/Renadyl
Dietary Supplement
Lead sponsor
Kibow Pharma
Industry
Eligibility
18 Years to 75 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 6, 2026, 10:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Growth of Infants Fed New Starter Formula

NCT01079208
View directory record Official record
Conditions
Dietary Intervention
Interventions
test starter infant formula, test starter infant formula with synbiotics, control standard formula
Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
11 Days to 6 Months
Enrollment
297 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
3
States / cities
San Francisco, California • Orlando, Florida • Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 3, 2014 · Synced Oct 6, 2026, 10:49 AM EDT