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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Acidophilus Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Flourish Vaginal Care System to Establish Neovaginal Microbiome

NCT05372770
View directory record Official record
Conditions
Neovaginal Microbiome
Interventions
Flourish Vaginal Care system
Device
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Hope, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 30, 2025 · Synced Sep 17, 2026, 10:26 AM EDT
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 30, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

Physiological Effects of Yogurt With Bb12 in Subjects With GI Symptoms Strointestinal Symptoms

NCT01004484
View directory record Official record
Conditions
Non-diarrhea Functional Bowel Symptoms
Interventions
A probiotic yogurt with inulin, Acidified dairy snack
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2010 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

Evaluation of Jarro-Dophilus EPS® Probiotic Formulations

NCT02693314
View directory record Official record
Conditions
Healthy
Interventions
Jarro-Dophilus EPS® (5 billion CFU/capsule), Jarro-Dophilus EPS® High Potency (25 billion CFU/capsule), Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 22, 2018 · Synced Sep 17, 2026, 10:26 AM 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 12, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Terminated Phase 2 Interventional Results available

Effect of VSL#3 on Bone Mineral Density in Postmenopausal Women

NCT03165747
View directory record Official record
Conditions
Menopausal Osteoporosis
Interventions
VSL#3, Placebo
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Correlating Probiotic Dietary Supplements During Pregnancy With Maternal Microbiome Profiles

NCT03611647
View directory record Official record
Conditions
Pregnancy Related
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
3
States / cities
La Jolla, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2019 · Synced Sep 17, 2026, 10:26 AM EDT
Not listed Phase 2Phase 3 Interventional Accepts healthy volunteers

Multistrain Probiotic for Functional Constipation

NCT01618617
View directory record Official record
Conditions
Functional Constipation
Interventions
High dose Multistrain probiotic, 100 billion cfu/day, Low dose Multistrain probiotic, 15 billion cfu/day
Dietary Supplement
Lead sponsor
Renew Life Formulas Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 29, 2012 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

A Study of the Effect of Probiotics on Gastrointestinal Function During Pregnancy

NCT03320226
View directory record Official record
Conditions
Pregnancy Early, Nausea Gravidarum, Vomiting of Pregnancy
Interventions
Probiotic 10 (Nature's Bounty)
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 8, 2023 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Lactobacillus on the Microbiome of Household Contacts Exposed to COVID-19

NCT04399252
View directory record Official record
Conditions
Microbiome
Interventions
Lactobacillus rhamnosus GG, Lactobacillus rhamnosus GG Placebo
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
1 Year and older
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2024 · Synced Sep 17, 2026, 10:26 AM EDT
Active, not recruiting Not applicable Interventional

Probiotics for Inflammation in Pediatric Chronic Pain

NCT05141890
View directory record Official record
Conditions
Chronic Pain, Body Mass Index >=85th Percentile
Interventions
Lactobacillus Plantarum
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
13 Years to 17 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Decreasing Rates of Illness in Kids (DRINK)

NCT00356382
View directory record Official record
Conditions
Healthy
Interventions
Lactobacillus (L.) casei
Drug
Lead sponsor
Georgetown University
Other
Eligibility
3 Years to 6 Years
Enrollment
638 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 13, 2008 · Synced Sep 17, 2026, 10:26 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 6, 2023 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety Study of Lactobacillus Administered Vaginally to Healthy Women

NCT00537576
View directory record Official record
Conditions
Bacterial Vaginosis
Interventions
Low dose LACTIN-V applicator, Medium dose LACTIN-V applicator, High dose LACTIN-V applicator, Low dose Placebo applicator, Medium dose Placebo, High dose Placebo applicator
Biological · Other
Lead sponsor
Osel, Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 15, 2020 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Probiotic for Oral Health (PRO Health) Study

NCT03748017
View directory record Official record
Conditions
Oral Microbiome
Interventions
Placebo-Control Supplement, Streptococcus-Containing Probiotic Supplement
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years to 45 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

Maternal Probiotic Supplementation for Improved Outcomes in Infants of Diabetic Mothers

NCT05467150
View directory record Official record
Conditions
Infant of Diabetic Mother
Interventions
Probiotic Supplement
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers

Trenev Trio/Healthy Trinity for Symptoms of Diarrhea-predominant Irritable Bowel Syndrome (IBS) and Functional Dyspepsia

NCT01268618
View directory record Official record
Conditions
IBS-D and Functional Dyspepsia
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Sprim Advanced Life Sciences
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
2
States / cities
Duluth, Georgia • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Sep 17, 2026, 10:26 AM 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 4, 2024 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Phase 1 Interventional

Effect of Lactobacillus Probiotic on Healthy Adults

NCT00748748
View directory record Official record
Conditions
Antibiotic-associated Diarrhea
Interventions
Culturelle
Biological
Lead sponsor
Fargo VA Medical Center
Federal
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 3, 2012 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting Early Phase 1 Interventional

Intravesical Lactobacillus Crispatus: Clinical Safety and Microbiome Evaluation

NCT07308808
View directory record Official record
Conditions
Spinal Cord Injuries (SCI), Neurogenic Bladder, Urinary Tract Infection (Diagnosis)
Interventions
Lactobacillus Crispatus, Saline bladder wash
Drug · Other
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effect of Probiotic Supplement on Quality of Life

NCT05523180
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Non-cystic Fibrosis Bronchiectasis
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
ResBiotic Nutrition, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Miami, Florida • The Villages, Florida
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Sep 17, 2026, 10:26 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Investigating the Effectiveness of 2 Different Doses of BIOHM FX Probiotic Blend in Improving Digestive Symptoms

NCT06782945
View directory record Official record
Conditions
Moderate Gastrointestinal Discomfort
Interventions
BIOHM FX Probiotic Blend
Dietary Supplement
Lead sponsor
Biohm Technologies
Industry
Eligibility
18 Years to 75 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 19, 2025 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotic on Psychological and Cognitive Effects

NCT03080818
View directory record Official record
Conditions
Aging
Interventions
Probiotic - Lactobacillus Rhamnosus GG, Placebo
Dietary Supplement · Other
Lead sponsor
Kent State University
Other
Eligibility
55 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Kent, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety, Tolerability and Host Response to Lactobacillus Johnsonii

NCT02349360
View directory record Official record
Conditions
Healthy
Interventions
L. johnsonii N6.2, Placebo
Biological
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 13, 2018 · Synced Sep 17, 2026, 10:26 AM EDT