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Showing 1–24 of 372 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Irritability; Syndrome Clear all
Completed Not applicable Interventional

Smartphone Training for Attention Regulation for IBS

NCT05083091
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Mindfulness and Attention Training, Mindfulness training, Coping Condition
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years and older
Enrollment
359 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 2 Interventional

Efficacy, Safety and Tolerability of DNK333 (25 and 100 mg Bid) in Women With Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

NCT00699166
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
DNK333
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older · Female only
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
29
States / cities
Anniston, Alabama • Huntsville, Alabama • Northport, Alabama + 26 more
Source: ClinicalTrials.gov public record
Updated Jun 16, 2008 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Behavior Therapy for Irritability in Autism

NCT04654260
View directory record Official record
Conditions
Autism Spectrum Disorder, Irritability, Disruptive Behavior, Anger, Aggression, Asperger Syndrome, Pervasive Developmental Disorder
Interventions
Behavioral Therapy for Irritability in Autism, Psychoeducation and Supportive Therapy (PST)
Behavioral
Lead sponsor
Yale University
Other
Eligibility
12 Years to 19 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional Results available

Efficacy of Open Label Placebo in Children With FGIDs

NCT02389998
View directory record Official record
Conditions
Functional Abdominal Pain, Functional Dyspepsia, Irritable Bowel Syndrome, Functional Gastrointestinal Disorders
Interventions
Placebo Suspension, Hyoscyamine
Other · Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
8 Years to 21 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional Results available

Clinical Study Comparing PillCam® Crohn's Capsule Endoscopy to Ileocolonoscopy (IC) Plus MRE for Detection of Active CD in the Small Bowel and Colon in Subjects With Known CD and Mucosal Disease.

NCT03241368
View directory record Official record
Conditions
Crohn Disease
Interventions
Capsule Endoscopy
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years and older
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
24
States / cities
Mobile, Alabama • Scottsdale, Arizona • Jacksonville, Florida + 20 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2020 · Synced Sep 11, 2026, 8:24 AM 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 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Activity Changes in Irritable Bowel Syndrome (IBS), Anxiety, and Depression Following the Use of Viome Precision Nutrition Program (VPNP)

NCT04905524
View directory record Official record
Conditions
Depression, Anxiety, IBS - Irritable Bowel Syndrome
Interventions
VIOME Precision Nutrition Program
Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
10,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Apr 3, 2022 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional

Sex Differences in Effectiveness of CBT on IBS Project 3

NCT05155631
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
COGNITIVE BEHAVIORAL THERAPY
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 55 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 2 Interventional Results available

Randomized, Double-blind, Dose-range-finding, Phase 2 Study of Linaclotide Administered to Patients With Irritable Bowel Syndrome With Constipation (IBS-C)

NCT00460811
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide Acetate, Matching placebo
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
79
States / cities
Huntsville, Alabama • Chandler, Arizona • Tuscon, Arizona + 76 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2013 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional

SMART Program in Irritable Bowel Syndrome (IBS)

NCT03454386
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Stress Management and Resilience Training Program, Self-Management Stress Reduction Program
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 31, 2020 · Synced Sep 11, 2026, 8:24 AM EDT
Recruiting Phase 2 Interventional

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

NCT07545772
View directory record Official record
Conditions
Irritable Bowel Syndrome, Constipation
Interventions
LY3537031, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
342 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
14
States / cities
Mesa, Arizona • Anaheim, California • Lancaster, California + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional

Symptom Management for Irritable Bowel Syndrome

NCT02079857
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Standard protocol, Individualized protocol, Sham acupuncture/Placebo moxa
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 70 Years
Enrollment
183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 27, 2020 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3, International, Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel-group Efficacy and Safety Trial of Linaclotide Administered Orally for 12 Weeks to Patients With Irritable Bowel Syndrome With Constipation (IBS-C)

NCT01880424
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation (IBS-C)
Interventions
Placebo, Linaclotide
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
1,722 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
52
States / cities
Huntsville, Alabama • North Little Rock, Arkansas • Phoenix, Arkansas + 49 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Sep 11, 2026, 8:24 AM EDT
Recruiting Phase 2 Interventional

Fecal Microbiota Transplantation for IBS

NCT05776914
View directory record Official record
Conditions
Irritable Bowel Syndrome, Diarrhea
Interventions
Donor Fecal Microbiota Transplantation, Autologous Fecal Microbiota Transplantation
Biological
Lead sponsor
Madhusudan (Madhu) Grover, MBBS
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Not applicable Interventional

Irritable Bowel Syndrome and Food Sensitivity

NCT02186743
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Personalized Dietary Advice
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced Sep 11, 2026, 8:24 AM EDT
Recruiting Not applicable Interventional

Feasibility Study of a Guided Imagery Therapy Mobile Application for Functional Abdominal Pain Disorders in Children

NCT07222943
View directory record Official record
Conditions
Functional Abdominal Pain Disorders, Irritable Bowel Syndrome (IBS), Functional Gastrointestinal Disorders (FGIDs), Gastrointestinal and Digestive Disorder, Abdominal Pain/ Discomfort, Pain, Functional Dyspepsia
Interventions
Guided Imagery Therapy
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 12 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Austin, Texas • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Biomarkers for Intestinal Permeability in Patients With Constipation

NCT02246647
View directory record Official record
Conditions
Intestinal Diseases, Irritable Bowel Syndrome, Constipation
Interventions
Permeability measurement, Esophagogastroduodenoscopy, Flexible sigmoidoscopy
Diagnostic Test · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate the Efficacy, Safety, and Tolerability of BOS-589 in the Treatment of Patients With Diarrhea-predominant Irritable Bowel Syndrome (IBS-D)

NCT03977155
View directory record Official record
Conditions
Diarrhea-predominant Irritable Bowel Syndrome
Interventions
BOS-589, Placebo
Drug
Lead sponsor
Boston Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
58
States / cities
Anniston, Alabama • Huntsville, Alabama • Chandler, Arizona + 48 more
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 2 Interventional

8 Weeks Treatment With DDP225 in Patients With Diarrhea Predominant IBS

NCT00230581
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
DDP225
Drug
Lead sponsor
Dynogen Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
5
States / cities
Scottsdale, Arizona • St Louis, Missouri • Great Neck, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2007 · Synced Sep 11, 2026, 8:24 AM EDT
Terminated Phase 3 Interventional

Long-Term Safety of Renzapride in Women With Constipation-Predominant Irritable Bowel Syndrome (IBS-C)

NCT00607971
View directory record Official record
Conditions
Constipation-Predominant Irritable Bowel Syndrome
Interventions
Renzapride
Drug
Lead sponsor
Alizyme
Industry
Eligibility
18 Years and older · Female only
Enrollment
939 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
126
States / cities
Huntsville, Alabama • Chandler, Arizona • Phoenix, Arizona + 112 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2008 · Synced Sep 11, 2026, 8:24 AM EDT
Not yet recruiting Phase 2 Interventional

Herbal Supplement (Biocidin REMOVE) for Bacterial Overgrowth in Irritable Bowel Syndrome

NCT07768267
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS), Small Intestinal Bacterial Overgrowth Syndrome (SIBO)
Interventions
Biocidin REMOVE, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed Phase 4 Interventional

Hydrogen Breath Test an Instrument to Predict Rifaximin-Response in Irritable Bowel Syndrome Predominant Diarrhea

NCT03729271
View directory record Official record
Conditions
Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea
Interventions
Rifaximin, Glucose and lactulose hydrogen breath testing
Drug · Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 80 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Sep 11, 2026, 8:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epidemiology and Pathophysiology of Post-Infectious Functional GI Disorders

NCT03266068
View directory record Official record
Conditions
Campylobacter Infections, Irritable Bowel Syndrome
Interventions
DNA Analysis of Blood Sample, Flexible sigmoidoscopy with colonic biopsies, Small bowel and colonic gastrointestinal permeability, Stool sample analysis
Genetic · Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 19, 2022 · Synced Sep 11, 2026, 8:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Developing Novel Microbiota-Targeted Therapies for Irritable Bowel Syndrome

NCT02249169
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Sep 11, 2026, 8:24 AM EDT