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Showing 1–24 of 555 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Irritability Clear all
Completed No phase listed Observational

Pediatric Alliance for International Neurogastrointestinal Functional Research

NCT01099787
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
4 Years to 16 Years
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
6
States / cities
Hartford, Connecticut • Chicago, Illinois • New Orleans, Louisiana + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Sep 5, 2026, 2:34 AM EDT
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, 2:34 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 5, 2026, 2:34 AM 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, 2:34 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Elucidating the Neurocircuitry of Irritability With High-Field Neuroimaging to Identify Novel Therapeutic Targets

NCT05046184
View directory record Official record
Conditions
Major Depressive Disorder, Healthy Controls
Interventions
Ketamine Hydrochloride, Midazolam injection
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Sep 5, 2026, 2:34 AM EDT
Terminated Phase 2 Interventional Results available

Ondansetron as a Strategy for Reducing Propofol Injection Pain in Pediatrics: a Randomized Controlled Trial

NCT05378113
View directory record Official record
Conditions
Injection Site Irritation
Interventions
Ondansetron, Lidocaine
Drug
Lead sponsor
Emory University
Other
Eligibility
2 Years to 17 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 5, 2026, 2:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Cumulative Irritation Potential of 828 Ointment

NCT00767455
View directory record Official record
Conditions
Healthy Volunteers
Interventions
HP828-101
Device
Lead sponsor
Healthpoint
Industry
Eligibility
18 Years to 65 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Irving, Texas
Source: ClinicalTrials.gov public record
Updated Mar 13, 2014 · Synced Sep 5, 2026, 2:34 AM 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, 2:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of the Irritation Potential of Products in Human Eyes

NCT02714166
View directory record Official record
Conditions
Sunscreening Agents
Interventions
Sunscreen lotion SPF (Sun Protection Factor) 50 (BAY987521), Ophthalmic Ointment
Other
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Sep 5, 2026, 2:34 AM 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, 2:34 AM EDT
Completed Not applicable Interventional Results available

Open Label Seroquel (Quetiapine) Study for Treatment Resistant Functional Bowel Disorder

NCT00617396
View directory record Official record
Conditions
Functional Bowel Disorders
Interventions
Quetiapine (50 mg/day-100mg/day)
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 14, 2017 · Synced Sep 5, 2026, 2:34 AM EDT
Completed No phase listed Observational

Biomarker and DNA Collection in Subjects Participating in Protocol 22003

NCT00892580
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
STX209
Drug
Lead sponsor
Seaside Therapeutics, Inc.
Industry
Eligibility
6 Years to 17 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
8
States / cities
Phoenix, Arizona • Los Angeles, California • New Haven, Connecticut + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2013 · Synced Sep 5, 2026, 2:34 AM 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, 2:34 AM 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, 2:34 AM EDT
Terminated Phase 1Phase 2 Interventional

Dose Response Relationship of Oxytocin on Irritability in Youths

NCT03863288
View directory record Official record
Conditions
Irritable Mood
Interventions
Functional MRI (fMRI), Oxytocin Intranasal Spray 8 International Unit (8IU), Oxytocin intranasal spray 24 International Unit (24IU), Oxytocin intranasal spray 48 International Unit (48IU), Oxytocin intranasal spray 80 International Unit (80IU), Placebo
Procedure · Drug
Lead sponsor
University of Nebraska
Other
Eligibility
14 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Sep 5, 2026, 2:34 AM EDT
Completed Early Phase 1 Interventional

Effect of Vitamin D After Application With Valchlor

NCT02968446
View directory record Official record
Conditions
Skin Irritation
Interventions
4 placebo, 4 Vitamin D, Valchlor
Dietary Supplement · Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 22, 2021 · Synced Sep 5, 2026, 2:34 AM 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, 2:34 AM 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, 2:34 AM 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, 2:34 AM 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, 2:34 AM 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, 2:34 AM 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, 2:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Topical Ice-therapy for Intravitreal Injections

NCT05269823
View directory record Official record
Conditions
Anesthesia; Hypothermia, Injection Site Irritation
Interventions
Ice-therapy, No Ice-therapy
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 5, 2026, 2:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determination of the Oral Irritation Potential of a Fluoride Rinse in Children

NCT06798441
View directory record Official record
Conditions
Healthy
Interventions
Brush Only, Brush / Rinse (Jolly Rancher Prototype), Brush / Rinse (LISTERINE® Total Care Zero Alcohol)
Other
Lead sponsor
Johnson & Johnson Consumer and Personal Products Worldwide
Industry
Eligibility
6 Years to 11 Years
Enrollment
161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Sep 5, 2026, 2:34 AM EDT