Irritable Bowel Syndrome Clinical Trials

109 recruitingLast updated: June 18, 2026

There are 109 actively recruiting irritable bowel syndrome clinical trials across 34 countries. Studies span Not Applicable, Phase 2, Phase 3, Phase 1, Early Phase 1, Phase 4. Top locations include Los Angeles, California, United States, Rouen, France, Indianapolis, Indiana, United States. Updated daily from ClinicalTrials.gov.


Irritable Bowel Syndrome Trials at a Glance

109 actively recruiting trials for irritable bowel syndrome are listed on ClinicalTrialsFinder across 6 cities in 34 countries. The largest study group is Not Applicable with 60 trials, with the heaviest enrollment activity in Los Angeles, Rouen, and Indianapolis. Lead sponsors running irritable bowel syndrome studies include Universitair Ziekenhuis Brussel, University Hospital, Rouen, and Mayo Clinic.

Browse irritable bowel syndrome trials by phase

Treatments under study

About Irritable Bowel Syndrome Clinical Trials

Looking for clinical trials for Irritable Bowel Syndrome? There are currently 80 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 Irritable Bowel Syndrome 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 Irritable Bowel Syndrome 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 109 trials

Recruiting

Anxiety and Depression in IBS: A Brain-Gut Axis Study

DepressionAnxietyIrritable Bowel Syndrome (IBS)
Tang-Du Hospital200 enrolled1 locationNCT07646834
Recruiting
Not Applicable

The Stool Microbiome of Treated and Untreated IBS (Irritable Bowel Syndrome) Patients

Irritable Bowel Syndrome
Weizmann Institute of Science100 enrolled1 locationNCT05972317
Recruiting
Not Applicable

Efficacy of Pregabalin for Patients With Irritable Bowel Syndrome

Irritable Bowel Syndrome (IBS)
Beijing Tiantan Hospital258 enrolled1 locationNCT07635394
Recruiting
Not Applicable

Probiotics and Biomarkers in Irritable Bowel Syndrome

Irritable Bowel Syndrome (IBS)
Sahlgrenska University Hospital252 enrolled1 locationNCT07584278
Recruiting
Not Applicable

Evaluation of the Efficacy and Safety of Gelsectan in the Treatment of Diarrhea-predominant Irritable Bowel Syndrome

Diarrhea-predominant irritable bowel syndromeIrritable Bowel Syndrome of Diarrhea Type (IBS-D)
University Medical Center Ho Chi Minh City (UMC)90 enrolled1 locationNCT07000383
Recruiting
Phase 2

Psyllium in Pediatric IBS

Irritable Bowel Syndrome
Dr Bruno Chumpitazi, M.D.110 enrolled1 locationNCT06639984
Recruiting
Phase 2

4-Week, Multi-center Dose-Ranging Study for the IBS-C in Pts. 6 to <12 Yrs

Irritable Bowel Syndrome With Constipation (IBS-C)
Ardelyx72 enrolled20 locationsNCT06553547
Recruiting
Phase 2

A Study of Brenipatide (LY3537031) in Participants With Irritable Bowel Syndrome-Diarrhea (IBS-D)

DiarrheaIrritable Bowel Syndrome
Eli Lilly and Company531 enrolled88 locationsNCT07545759
Recruiting
Not Applicable

A Study Evaluating the Impact of Regular FODMAP-targeting Digestive Enzyme Blend Use on Gastrointestinal Symptoms in Individuals With Self-Reported Bloating

Gut healthIBS - Irritable Bowel SyndromeAbdominal Pain+1 more
Kiwi Health Inc150 enrolled1 locationNCT07591584
Recruiting
Phase 4

Evaluation of Efficacy of Skål Pro Powder on Symptoms of Irritable Bowel Syndrome

Pathologic ProcessesIntestinal DiseaseGastrointestinal Diseases+5 more
EP Plus Group Sdn Bhd60 enrolled1 locationNCT06271538
Recruiting
Phase 2

A Study of Brenipatide (LY3537031) in Participants With Irritable Bowel Syndrome-Constipation (IBS-C)

ConstipationIrritable Bowel Syndrome
Eli Lilly and Company342 enrolled1 locationNCT07545772
Recruiting
Not Applicable

Mechanism of FODMAP Restriction on FGID Patients

Functional DyspepsiaIrritable Bowel Syndrome (IBS)Functional Gastrointestinal Disorders (FGIDs)
Universiti Kebangsaan Malaysia Medical Centre60 enrolled1 locationNCT07000227
Recruiting
Not Applicable

NCWS or IBS/FD in Relatives of CD Patients

Celiac DiseaseIBS - Irritable Bowel SyndromeFunctional Dyspepsia+1 more
University of Palermo600 enrolled2 locationsNCT07584473
Recruiting
Not Applicable

Repeated Transcranial Magnetic Stimulation for the Treatment of Diarrhea-Predominant Irritable Bowel Syndrome: A Randomized Clinical Trial

Intestinal FloraIrritable Bowel SyndromeChronic Diarrhea+2 more
The First Affiliated Hospital of Soochow University46 enrolled1 locationNCT07581756
Recruiting
Phase 2

Fecal Microbiota Transplantation for IBS

DiarrheaIrritable Bowel Syndrome
Madhusudan (Madhu) Grover, MBBS43 enrolled1 locationNCT05776914
Recruiting
Not Applicable

Feasibility Assessment of Cardiovascular Endurance Training for the Symptomatic Improvement of Irritable Bowel Syndrome Patients With a Sedentary and Non-active Lifestyle.

Irritable Bowel Syndrome
Universitair Ziekenhuis Brussel30 enrolled1 locationNCT05680766
Recruiting
Not Applicable

Exclude or Expose in Irritable Bowel Syndrome: What Works for Whom and How?

Gastrointestinal DiseaseIntestinal DiseasesIrritable Bowel Syndrome (IBS)
University of Melbourne235 enrolled1 locationNCT06940596
Recruiting
Not Applicable

Sucrase-Isomaltase (SI) Genes and Meal Load

IBS - Irritable Bowel SyndromeSucrase-Isomaltase Deficiency
Region Skane70 enrolled1 locationNCT07309601
Recruiting
Not Applicable

A Prospective Trial of a Variable Compression System for Moderate to Severe Irritable Bowel Syndrome

IBS - Irritable Bowel Syndrome
PGP Health20 enrolled3 locationsNCT07540312
Recruiting
Not Applicable

Well-being in IBS: Strengths and Happiness (WISH) 2.0

Irritable Bowel Syndrome
Massachusetts General Hospital50 enrolled1 locationNCT06866106