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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Recruiting Phase 2 Interventional

Efficacy of Rifaximin With NAC in IBS-D

NCT06727422
View directory record Official record
Conditions
IBS (Irritable Bowel Syndrome), IBS-D (Diarrhea-predominant)
Interventions
rifaximin 66mg + N-acetylcysteine 560mg three times daily, RNIB21 containing rifaximin 132mg + N-acetylcysteine 560mg three times daily, Placebo
Drug
Lead sponsor
Mark Pimentel, MD
Other
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Sep 22, 2026, 10:05 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Visible Abdominal Distension

NCT06369753
View directory record Official record
Conditions
Irritable Bowel Syndrome, Dyspepsia, Functional Bloating
Interventions
Biofeedback, Placebo
Behavioral
Lead sponsor
Hospital Universitari Vall d'Hebron Research Institute
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 1Phase 2 Interventional

Effect of TU-100 in Patients With Irritable Bowel Syndrome (IBS)

NCT01890837
View directory record Official record
Conditions
Irritable Bowel Syndrome, Digestive System Diseases, Gastrointestinal Diseases, Intestinal Diseases, Abdominal Pain
Interventions
Daikenchuto (TU-100), Placebo
Drug
Lead sponsor
Tsumura USA
Industry
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 12, 2016 · Synced Sep 22, 2026, 10:05 PM EDT
Recruiting Phase 2 Interventional

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

NCT07545759
View directory record Official record
Conditions
Irritable Bowel Syndrome, Diarrhea
Interventions
LY3537031, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
15
States / cities
Mesa, Arizona • Anaheim, California • Lancaster, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cerebral Cortical Influences on Autonomic Function

NCT03869372
View directory record Official record
Conditions
Healthy Subjects, Functional Dyspepsia, Irritable Bowel Syndrome
Interventions
rTMS
Device
Lead sponsor
David Levinthal
Other
Eligibility
21 Years to 60 Years
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 22, 2026, 10:05 PM EDT
Terminated Phase 4 Interventional Results available

Efficacy of Gralise® for Chronic Pelvic Pain

NCT01678911
View directory record Official record
Conditions
Irritable Bowel Syndrome, Ulcerative Colitis, Interstitial Cystitis, Prostatitis, Pelvic Pain
Interventions
Gralise
Drug
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 28, 2015 · Synced Sep 22, 2026, 10:05 PM EDT
Terminated No phase listed Observational

Older Patients With Newly Diagnosed Breast Cancer or Colon Cancer

NCT00740961
View directory record Official record
Conditions
Breast Cancer, Cognitive/Functional Effects, Colorectal Cancer, Psychosocial Effects of Cancer and Its Treatment
Interventions
compliance monitoring, systemic chemotherapy, medical chart review, study of socioeconomic and demographic variables, survey administration, cognitive assessment, psychosocial assessment and care
Behavioral · Drug · Other + 1 more
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
65 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
5
States / cities
Cleveland, Ohio • Mentor, Ohio • Orange, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2020 · Synced Sep 22, 2026, 10:05 PM EDT
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 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Brain Imaging and Pain in Irritable Bowel Syndrome

NCT00065754
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
placebo
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 19, 2011 · Synced Sep 22, 2026, 10:05 PM EDT
Terminated Not applicable Interventional

Exercise Preconditioning with Cancer Surgeries

NCT04923672
View directory record Official record
Conditions
Colorectal Cancer, Hepatobiliary Cancer, Gynecologic Cancer
Interventions
Moderate continuous exercise, High intensity interval exercise
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Comparing Two Types of Diets on Psychological and Gastrointestinal Symptoms

NCT03035799
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Paleolithic diet, General Healthful Diet
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 6, 2020 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Use of a Prokinetic Agent as an Adjunct to Thrice Weekly Bowel Care After SCI

NCT04671030
View directory record Official record
Conditions
Spinal Cord Injuries, Constipation, Neurogenic Bowel
Interventions
Neostigmine and Glycopyrrolate, Iontophoresis
Drug · Device
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 75 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Dec 29, 2021 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Effects of Yoga on Cognitive and Immune Function in Colorectal Cancer

NCT02564835
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Yoga, Physical Activity
Other
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 2 Interventional

A Study of 3 Doses of Dextofisopam in Females With Irritable Bowel Syndrome

NCT00486876
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Dextofisopam
Drug
Lead sponsor
Pharmos
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
324 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
79
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 67 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2011 · Synced Sep 22, 2026, 10:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Chemotherapy-Related Changes in Neurocognitive Function and Symptoms in Colorectal Cancer Patients: A Pilot Study

NCT03683004
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional

Pilot Study Using a Dietary Intervention for Children With Irritable Bowel Syndrome

NCT01018498
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Restricted FODMAPs diet
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 17 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Sep 22, 2026, 10:05 PM 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 22, 2026, 10:05 PM EDT
Completed No phase listed Observational

Study of Symptoms Caused by Cancer and Cancer Therapy in Patients With Invasive Breast, Lung, Prostate, or Colorectal Cancer

NCT00303914
View directory record Official record
Conditions
Breast Cancer, Cognitive/Functional Effects, Colorectal Cancer, Lung Cancer, Pain, Prostate Cancer, Psychosocial Effects of Cancer and Its Treatment
Interventions
assessment of therapy complications, cognitive assessment, psychosocial assessment and care
Procedure
Lead sponsor
Eastern Cooperative Oncology Group
Network
Eligibility
18 Years to 120 Years
Enrollment
2,310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
32
States / cities
Chicago, Illinois • Evanston, Illinois • Elkhart, Indiana + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2023 · Synced Sep 22, 2026, 10:05 PM EDT
Completed No phase listed Observational

Cohort Study of Bowel Function Following Robotic-assisted Laparoscopic Sacrocolpopexy

NCT01618292
View directory record Official record
Conditions
Pelvic Organ Prolapse, Constipation, Bowel Dysfunction, Irritable Bowel Syndrome
Interventions
Robotic sacral colpopexy
Procedure
Lead sponsor
Atlantic Health System
Other
Eligibility
Female only
Enrollment
393 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Morristown, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 27, 2014 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of a Yoga Intervention on Pain and Multiomics in Participants With IBS

NCT04315714
View directory record Official record
Conditions
Irritable Bowel Syndrome, Abdominal Pain
Interventions
Yoga Program
Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 55 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 1, 2021 · Synced Sep 22, 2026, 10:05 PM EDT
Completed Phase 2 Interventional Results available

Vestibulodynia: Understanding Pathophysiology and Determining Appropriate Treatments

NCT03844412
View directory record Official record
Conditions
Vestibulodynia, Temporomandibular Disorder, Fibromyalgia Syndrome, Irritable Bowel Syndrome, Migraines, Tension Headache, Endometriosis, Interstitial Cystitis, Back Pain, Chronic Fatigue Syndrome
Interventions
5% lidocaine/5 mg/ml 0.02% estradiol compound cream, Nortriptyline, Placebo cream, Placebo pill
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
2
States / cities
Los Angeles, California • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 22, 2026, 10:05 PM 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 22, 2026, 10:05 PM EDT
Not listed Phase 4 Interventional

Neostigmine Route for Acute Colonic Pseudo Obstruction

NCT04951726
View directory record Official record
Conditions
Ogilvie Syndrome
Interventions
Neostigmine
Drug
Lead sponsor
University of Southern California
Other
Eligibility
16 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 24, 2023 · Synced Sep 22, 2026, 10:05 PM EDT
Recruiting Phase 2 Interventional

The Use of Directed Probiotics in ME/CFS: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

NCT06211062
View directory record Official record
Conditions
ME/CFS, IBS - Irritable Bowel Syndrome
Interventions
Floradapt Intensive GI, Placebo
Drug · Other
Lead sponsor
Nova Southeastern University
Other
Eligibility
45 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Mar 3, 2025 · Synced Sep 22, 2026, 10:05 PM EDT