Probiotics Clinical Trials

13 recruitingLast updated: June 18, 2026

There are 13 actively recruiting probiotics clinical trials across 8 countries. Studies span Not Applicable, Phase 4, Phase 2, Early Phase 1. Top locations include Xi’an, Shanxi, China, New Taipei City, Taiwan, Helsinki, Finland. Updated daily from ClinicalTrials.gov.


Probiotics Trials at a Glance

13 actively recruiting trials for probiotics are listed on ClinicalTrialsFinder across 6 cities in 8 countries. The largest study group is Not Applicable with 7 trials, with the heaviest enrollment activity in Xi’an, New Taipei City, and Helsinki. Lead sponsors running probiotics studies include Xijing Hospital of Digestive Diseases, Chang Gung Memorial Hospital, and Aristotle University Of Thessaloniki.

Browse probiotics trials by phase

Treatments under study

About Probiotics Clinical Trials

Looking for clinical trials for Probiotics? There are currently 10 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 Probiotics 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 Probiotics 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 113 of 13 trials

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

Effectiveness of Coenzyme Q10 and Probiotics in Periodontal Therapy During Pregnancy

PregnancyMicrobiotaGingivitis+4 more
University of Pavia40 enrolled1 locationNCT07029360
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
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
Not Applicable

Infant Microbiota Restoration With Maternal Microbes

Vaginal deliveryneonatePregnancy+12 more
University of Helsinki100 enrolled2 locationsNCT07212361
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
Not Applicable

The Role of Probiotics in the Treatment of Endometriosis (ProMetrioS): a Randomised Double-blinded Placebo-controlled Cross-over Trial

EndometriosisProbiotics
The Gut Microbiome Center (Centar za crijevni mikrobiom)40 enrolled1 locationNCT06929364
Recruiting
Phase 2

Probiotics in Advanced Urothelial Carcinoma

ImmunotherapyAdvanced Urothelial CarcinomaProbiotics
Sun Yat-sen University222 enrolled3 locationsNCT06904573
Recruiting
Phase 2

Synbiotics and Fecal Microbiota Transplantation to Treat Non-Alcoholic Steatohepatitis

Intestinal microbiomeNon-Alcoholic Fatty Liver DiseaseNon Alcoholic Steatohepatitis+6 more
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)48 enrolled1 locationNCT05821010
Recruiting
Not Applicable

Probiotics for Depression in Cancer Patients

ChemotherapyQuality of LifeGastrointestinal Cancer+3 more
Aristotle University Of Thessaloniki270 enrolled1 locationNCT06496438
Recruiting
Not Applicable

Probiotics for Improving Post-surgical Healing

Wound HealProbioticsTooth, Impacted+1 more
University of Pisa150 enrolled1 locationNCT04903925