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Showing 1–24 of 247 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: IBS Clear all
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 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

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

NCT05289089
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Positive Psychology Intervention
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

A Randomized Crossover Trial of Bright Light Therapy in Irritable Bowel Syndrome

NCT06676488
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS), Circadian Misalignment
Interventions
Re-Timer glasses, Placebo Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 5, 2026, 5:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Role of Intestinal Inflammation in Irritable Bowel Syndrome (IBS)

NCT01072903
View directory record Official record
Conditions
Inflammation, Colon, Irritable, Colonic Diseases, Functional, Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 11, 2013 · Synced Sep 5, 2026, 5:30 PM EDT
Terminated Phase 3 Interventional Results available

52-Week Efficacy and Safety Study of Ibodutant in Women With Irritable Bowel Syndrome With Diarrhea (IBS-D)

NCT02120027
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Ibodutant 10 mg, Placebo
Drug
Lead sponsor
Menarini Group
Industry
Eligibility
18 Years and older · Female only
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
73
States / cities
Chandler, Arizona • Glendale, Arizona • Mesa, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2017 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 1 Interventional

A Study to Evaluate Fecal Microbiota Transplantation Engraftment in IBS

NCT02847481
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
fecal microbiota transplantation, placebo fecal microbiota transplantation, FMT with antibiotic pre-treatment (v1), FMT with antibiotic pre-treatment (v2)
Procedure · Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 22, 2019 · Synced Sep 5, 2026, 5:30 PM EDT
Completed No phase listed Observational

Efficacy of Psychological Therapies in Patients With Functional Bowel Disorders

NCT04060121
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome, Constipation
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 28, 2024 · Synced Sep 5, 2026, 5:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Phenotyping IBS: Perceptions and Modulations of Visceral Sensations

NCT02693730
View directory record Official record
Conditions
Irritable Bowel Syndrome, Ulcerative Colitis, Inflammatory Bowel Disease
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 60 Years
Enrollment
198 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 8, 2023 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

Efficacy of Guided Imagery Therapy Mobile Application for Functional Abdominal Pain

NCT06653647
View directory record Official record
Conditions
Functional Abdominal Pain Disorders, Irritable Bowel Syndrome (IBS), Functional Gastrointestinal Disorders, Functional Colonic Disease, Gastrointestinal Disease, Digestive System Diseases, Neurological Manifestations, Signs and Symptoms, Digestive, Pain, Abdominal Pain/ Discomfort
Interventions
Guided Imagery Therapy
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 12 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

Clinical Trial Examining Effects of Monosodium Glutamate (MSG) on Irritable Bowel Syndrome (IBS) and Fibromyalgia (FM)

NCT00829218
View directory record Official record
Conditions
Irritable Bowel Syndrome, Fibromyalgia
Interventions
Glutamate additive-free diet, Placebo diet
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 23, 2013 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 3 Interventional Results available

Rifaximin 3 Times/Day (TID) for Non-Constipation Irritable Bowel Syndrome (IBS)

NCT00724126
View directory record Official record
Conditions
Non-Constipation Irritable Bowel Syndrome
Interventions
Rifaximin, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
637 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
88
States / cities
Anniston, Alabama • Birmingham, Alabama • Huntsville, Alabama + 83 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2019 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 2 Interventional Results available

A Study of MD-7246 to Treat Abdominal Pain in Patients With Diarrhea-predominant Irritable Bowel Syndrome

NCT03931785
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea (IBS-D)
Interventions
MD-7246, Placebo
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
80
States / cities
Huntsville, Alabama • Phoenix, Arizona • North Little Rock, Arkansas + 65 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2021 · Synced Sep 5, 2026, 5:30 PM EDT
Withdrawn Not applicable Interventional

Efficacy of Virtual Reality (VR) for Irritable Bowel Syndrome

NCT06257472
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Virtual Reality Headset
Device
Lead sponsor
Anthony Lembo
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
2
States / cities
Los Angeles, California • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Sep 5, 2026, 5:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sucrose Breath Test to Determine Intestinal Permeability in IBS

NCT01674088
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Metabolic Solutions Inc.
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2014 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

Precision Pain Self-Management in Young Adults With Irritable Bowel Syndrome

NCT03332537
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Personalized IBS Pain SM
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 29 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
2
States / cities
Farmington, Connecticut • Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 3, 2019 · Synced Sep 5, 2026, 5:30 PM EDT
Not listed Phase 2 Interventional

Acupuncture/Moxibustion for Irritable Bowel Syndrome (IBS)

NCT00945074
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Standard Acupuncture/Moxibustion (fixed protocol), Individualized Acupuncture/Moxibustion, Sham/Placebo Acupuncture/Moxibustion
Other
Lead sponsor
New York University
Other
Eligibility
18 Years to 70 Years
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 21, 2016 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional Results available

Effect of Lubiprostone on Small Bowel Contractions in Female Patients With Constipation Irritable Bowel Syndrome (C-IBS)

NCT01085643
View directory record Official record
Conditions
Constipation-predominant Irritable Bowel Syndrome
Interventions
Lubiprostone, Placebo
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2011 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 4 Interventional

Effect of Tenapanor on the Metagenomics and Metabolomics of Patients With Irritable Bowel Syndrome With Constipation

NCT05995899
View directory record Official record
Conditions
IBS, IBS - Irritable Bowel Syndrome
Interventions
Tenapanor
Drug
Lead sponsor
Kyle Staller, MD, MPH
Other
Eligibility
18 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 2 Interventional

Diarrhea Predominant Irritable Bowel Syndrome in Females

NCT00461526
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
crofelemer
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
43
States / cities
Huntsville, Alabama • Chandler, Arizona • Tucson, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional

Investigation of Linaclotide's Effect on the Bi-directional Brain and Gut Axis in IBS-C Patients

NCT02078323
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation (IBS-C)
Interventions
Linaclotide, Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 64 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2018 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Not applicable Interventional Results available

Efficacy and Safety of IBS Digital Behavioral Treatment

NCT04133519
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Arm 1 - Active behavioral Treatment Arm (Regulora; Gut-Directed Hypnotherapy Software as a Medical Device - SaMD), Arm 2 - Active Comparator behavioral treatment arm (MR-1; Muscle Relaxation, Software as a Medical Device - SaMD)
Device
Lead sponsor
metaMe Health
Industry
Eligibility
18 Years to 70 Years
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 3, 2022 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 3 Interventional Results available

Irritable Bowel Syndrome With Diarrhea (IBS-D) Rifaximin Re-Treatment Study

NCT01543178
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
open-label rifaximin, double-blind placebo, double-blind rifaximin
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2,583 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
293
States / cities
Anniston, Alabama • Birmingham, Alabama • Dothan, Alabama + 226 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2017 · Synced Sep 5, 2026, 5:30 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Specimen and Data Collection for a Novel Biomarker Combination for the Differential Diagnosis of Inflammatory Bowel Disease and Irritable Bowel Syndrome.

NCT07471490
View directory record Official record
Conditions
IBD (Inflammatory Bowel Disease), IBS (Irritable Bowel Syndrome), Gastrointestinal Symptoms
Interventions
Not listed
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
2 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 5, 2026, 5:30 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Clinical Research Study to Evaluate Selegiline in the Treatment of Borderline Personality Disorder

NCT01912391
View directory record Official record
Conditions
Borderline Personality Disorder
Interventions
Selegiline, Placebo (for Selegiline)
Drug
Lead sponsor
Mood and Anxiety Research, Inc
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Oct 7, 2015 · Synced Sep 5, 2026, 5:30 PM EDT