Probiotic Clinical Trials

28 recruitingLast updated: June 18, 2026

There are 28 actively recruiting probiotic clinical trials across 11 countries. Studies span Not Applicable, Phase 2, Phase 4, Early Phase 1, Phase 1, Phase 3. Top locations include New Taipei City, Taiwan, Xi’an, Shanxi, China, Guangzhou, Guangdong, China. Updated daily from ClinicalTrials.gov.


Probiotic Trials at a Glance

28 actively recruiting trials for probiotic are listed on ClinicalTrialsFinder across 6 cities in 11 countries. The largest study group is Not Applicable with 16 trials, with the heaviest enrollment activity in New Taipei City, Xi’an, and Guangzhou. Lead sponsors running probiotic studies include First Affiliated Hospital of Chongqing Medical University, Sun Yat-sen University, and Xijing Hospital of Digestive Diseases.

Browse probiotic trials by phase

Treatments under study

About Probiotic Clinical Trials

Looking for clinical trials for Probiotic? There are currently 9 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Probiotic trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Probiotic clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 28 trials

Recruiting
Phase 2

Efficacy and Safety of Sertraline Combined With Lactobacillus Crispatus in Adolescents With Depression

Major Depressive Disorder (MDD)Probiotic Intervention
First Affiliated Hospital of Chongqing Medical University60 enrolled2 locationsNCT07539805
Recruiting
Phase 2

Sertraline Combined With Multi-Strain Probiotics for Adolescent Depression

Major Depressive Disorder (MDD)Probiotic Intervention
First Affiliated Hospital of Chongqing Medical University120 enrolled1 locationNCT07645157
Recruiting
Not Applicable

Developing Precision Microbiota-Based Cocktail Modification Therapy to Delay the Progression of Parkinson's Disease (PD) - Use Preclinical Human Trials to Confirm the Impact of the Optimal "Probiotic Y7, Tryptophan and Branched-chain Amino Acid" Cocktail Formula on Early Stage PD Patients

Gut MicrobiotaParkinson Disease (PD)Probiotic
Taipei Medical University120 enrolled1 locationNCT07619560
Recruiting
Phase 4

The Effect of Oral Clostridium Butyricum on the Recurrence After Colonoscopic Resection of Colorectal Adenoma

Colorectal AdenomaProbiotics
The Affiliated Hospital of Qingdao University294 enrolled2 locationsNCT07167342
Recruiting
Early Phase 1

Development of a Preparation for Supportive Supplementation of Probiotics in Patients With Reflux

MicrobiomeReflux DiseaseProbiotics Supplement
University Hospital Olomouc50 enrolled1 locationNCT07600008
Recruiting
Not Applicable

Probiotic Research On Safety, Palatability, Efficacy and Receptivity

Probiotic Intervention
Carleton University82 enrolled1 locationNCT07512557
Recruiting
Phase 2

Biolosion Combined Standard Neoadjuvant Therapy to Treat Triple-negative Breast Cancer

Breast CancerTriple Negative Breast Cancer(TNBC)Early Stage Breast Cancer+2 more
Sun Yat-sen University192 enrolled5 locationsNCT06768931
Recruiting
Not Applicable

Efficacy of Symprove Probiotics in Coeliac Disease

Probioticcoeliac diseaseGluten
Sheffield Teaching Hospitals NHS Foundation Trust24 enrolled1 locationNCT07360106
Recruiting
Not Applicable

Probiotic Intervention on Body Weight

ObesityWeight LossProbiotic Intervention+1 more
Chinese Academy of Sciences140 enrolled1 locationNCT06989177
Recruiting
Not Applicable

Probiotics in Pulmonaty Rehabilitation for COPD

COPD, Chronic Obstructive Pulmonary DiseaseBody Composition MeasurementProbiotic Intervention
Fu Jen Catholic University60 enrolled1 locationNCT06717659
Recruiting
Not Applicable

Effectiveness of Coenzyme Q10 and Probiotics in Periodontal Therapy During Pregnancy

PregnancyMicrobiotaGingivitis+4 more
University of Pavia40 enrolled1 locationNCT07029360
Recruiting
Not Applicable

Probiotic-Based Versus Ethyl Lauroyl Arginate-Containing Mouthwashes on Streptococcus Mutans Counts, Dental Plaque Accumulation, and Salivary pH in a Group of Egyptian School Children

Dental PlaqueChildrenProbiotic+4 more
Al-Azhar University66 enrolled1 locationNCT07356869
Recruiting
Phase 4

Efficacy of Bacillus Coagulans in Alleviating Anxiety and Depression in Patients With Functional Dyspepsia

DepressionAnxietyFunctional Dyspepsia+1 more
Xijing Hospital of Digestive Diseases180 enrolled1 locationNCT07187492
Recruiting
Phase 4

Efficacy of Clostridium Butyricum in Alleviating Anxiety and Depression in Patients With Functional Dyspepsia

DepressionAnxietyFunctional Dyspepsia+1 more
Xijing Hospital of Digestive Diseases180 enrolled1 locationNCT07182890
Recruiting
Not Applicable

Multi-strain Probiotic Effects on Self-Reported Constipation

ConstipationProbioticProbiotic Intervention
Dr Anthony Hobson20 enrolled1 locationNCT07275866
Recruiting
Not Applicable

Infant Microbiota Restoration With Maternal Microbes

Vaginal deliveryneonatePregnancy+12 more
University of Helsinki100 enrolled2 locationsNCT07212361
Recruiting
Phase 2Phase 3

Evaluate the Efficacy and Safety of Probiotic 6600 as an Adjuvant Therapy for Colitis

ColitisIBD (Inflammatory Bowel Disease)Probiotic Intervention
Changhai Hospital120 enrolled1 locationNCT07047339
Recruiting
Not Applicable

The Effect of Survival, Response and Microbiota Change in Different Therapy Under Probiotic Supplement

Cancer, Therapy-RelatedProbiotics
Chang Gung Memorial Hospital120 enrolled1 locationNCT06998823
Recruiting
Not Applicable

Prebiotic Effects of Mulberry Fruit in Children and Adolescents With Atopic Dermatitis

atopic dermatitis (eczema)Atopic Dermatitis, Probiotics
Taipei Medical University Shuang Ho Hospital120 enrolled2 locationsNCT06636240
Recruiting
Phase 1

Efficacy of Repeated Transcranial Magnetic Stimulation Combined With a Live Probiotic Tablet (Combined Bifidobacterium, Lactobacillus, Enterococcus and Bacillus Cereus Tablets, Live) in Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

Intestinal FloraIrritable Bowel SyndromeProbiotic+3 more
The First Affiliated Hospital of Soochow University400 enrolled1 locationNCT06960369