Bacterial Overgrowth Clinical Trials

10 recruitingLast updated: June 18, 2026

There are 10 actively recruiting bacterial overgrowth clinical trials across 6 countries. Studies span Phase 1, Phase 2, Not Applicable. Top locations include Cairo, Cairo Governorate, Egypt, Calgary, Alberta, Canada, Dhaka, Bangladesh. Updated daily from ClinicalTrials.gov.


Bacterial Overgrowth Trials at a Glance

10 actively recruiting trials for bacterial overgrowth are listed on ClinicalTrialsFinder across 6 cities in 6 countries. The largest study group is Phase 1 with 3 trials, with the heaviest enrollment activity in Cairo, Calgary, and Dhaka. Lead sponsors running bacterial overgrowth studies include Envivo Bio Inc, I.M. Sechenov First Moscow State Medical University, and Cairo University.

Browse bacterial overgrowth trials by phase

Treatments under study

About Bacterial Overgrowth Clinical Trials

Looking for clinical trials for Bacterial Overgrowth? There are currently 1 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 Bacterial Overgrowth 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 Bacterial Overgrowth 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 110 of 10 trials

Recruiting
Phase 2

Comparative Efficacy of Antibiotics for Small Intestine Bacterial Overgrowth in Bangladeshi Children

Small Intestine Bacterial Overgrowth
University of Virginia60 enrolled1 locationNCT07451171
Recruiting

Combined Lactulose H2-breath Test With Abdominal Imaging

Small Intestinal Bacterial Overgrowth Syndrome (SIBO)Breath TestsFood Intolerance Syndromes
Klinik Arlesheim500 enrolled1 locationNCT07145580
Recruiting
Phase 1

Pilot Feasibility Study of Fecal Microbiota Transplant for the Treatment of Small Intestinal Bacterial Overgrowth

Small Intestinal Bacterial Overgrowth
McMaster Children's Hospital20 enrolled2 locationsNCT05967871
Recruiting
Phase 1

Evaluating the Effect Of Rifaximin on the Gut Microbiota and Metabolome in SIBO Using CapScan®

Small Intestinal Bacterial Overgrowth
Envivo Bio Inc34 enrolled1 locationNCT06298409
Recruiting
Phase 2

Evaluation Of Marginal Bone Height Changes And Biting Force In Screw Retained Implant Prostheses Using Reinforced Resin Vs Monolithic Zirconium

Color StabilityBiting ForcesBone; Change, Diabetic (Manifestation)+3 more
Cairo University14 enrolled2 locationsNCT07007572
Recruiting
Phase 1Phase 2

Herbal Evaluation Of Artemisia Annua For Small Intestinal Bacterial Overgrowth

Small Intestinal Bacterial Overgrowth Syndrome (SIBO)
National University of Natural Medicine32 enrolled1 locationNCT06721884
Recruiting
Not Applicable

The Safety And Efficacy Of A Probiotic Intervention On Lactulose Hydrogen Breath Test-Positive Patients And Related Gastrointestinal Symptoms

Small Intestinal Bacterial OvergrowthSIBO
Nimble Science Ltd.105 enrolled1 locationNCT06317441
Recruiting

Urine Metabolites in the Diagnosis of Disease

Colorectal, CancerCeliac DiseaseCrohn Disease+1 more
Luventix, Inc.1,250 enrolled4 locationsNCT06710067
Recruiting
Not Applicable

Rifaximin and Cardiac Function in Patients with Heart Failure with Preserved Ejection Fraction

Heart Failure With Preserved Ejection FractionBacterial Overgrowth Syndrome Small Bowel
I.M. Sechenov First Moscow State Medical University40 enrolled1 locationNCT06652087
Recruiting

Indiana University Gastrointestinal Motility Diagnosis Registry

eosinophilic esophagitisConstipationGastroparesis+6 more
Indiana University5,000 enrolled1 locationNCT04506593