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ClinicalTrials.gov public records Last synced May 21, 2026, 11:10 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Diarrhea Predominant Irritable Bowel Syndrome Clear all
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
American Diet, Mediterranean-style Diet
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Very low carbohydrate diet
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 15, 2017 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Diarrhea-Predominant Irritable Bowel Syndrome
Interventions
Glutamine
Drug
Lead sponsor
Tulane University
Other
Eligibility
18 Years to 72 Years
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 8, 2017 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
250 mg LX1033 tablets, Placebo tablet
Drug
Lead sponsor
Lexicon Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
81
States / cities
Huntsville, Alabama • Tempe, Arizona • Tucson, Arizona + 75 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2015 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Diarrhea-predominant Irritable Bowel Syndrome
Interventions
Serum-derived bovine immunoglobulin protein isolate (SBI)
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
ONO-2952, ONO-2952 Matching Placebo
Drug
Lead sponsor
Ono Pharma USA Inc
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
48
States / cities
Anniston, Alabama • Goodyear, Arizona • Tucson, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced May 21, 2026, 11:10 PM EDT
Recruiting Phase 2 Interventional
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 May 21, 2026, 11:10 PM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Irritable Colon, Irritable Bowel Syndrome (IBS)
Interventions
alosetron
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older · Female only
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
190
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 166 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced May 21, 2026, 11:10 PM EDT
Terminated Phase 2Phase 3 Interventional Results available
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 14, 2016 · Synced May 21, 2026, 11:10 PM EDT
Terminated Phase 2 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
ONO-2952, Placebo comparator
Drug
Lead sponsor
Ono Pharma USA Inc
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
4
States / cities
Boston, Massachusetts • St Louis, Missouri • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2016 · Synced May 21, 2026, 11:10 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome
Interventions
EnteraGam
Other
Lead sponsor
Entera Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
16
States / cities
Greenwich, Connecticut • Hamdon, Connecticut • Coral Springs, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2016 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Eluxadoline, Placebo
Drug
Lead sponsor
Furiex Pharmaceuticals, Inc
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,282 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
257
States / cities
Athens, Alabama • Birmingham, Alabama • Foley, Alabama + 214 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2018 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Mesalamine, Placebo
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 11, 2014 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Colesevelam
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 11, 2016 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
a low FODMAP diet for 4 weeks
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
Boston, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Serum-Derived Bovine Immunoglobulin, Placebo
Dietary Supplement · Other
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
8 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 17, 2019 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available
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 May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Fecal microbiota transplantation capsules, Placebo capsules
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
19 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
3
States / cities
Hamden, Connecticut • New York, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available
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 May 21, 2026, 11:10 PM EDT
Terminated Phase 2 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Olorinab, Placebo
Drug
Lead sponsor
Arena Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
69
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
ASP7147, Placebo
Drug
Lead sponsor
Seldar Pharma, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
13
States / cities
Phoenix, Arizona • Encino, California • La Mesa, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2019 · Synced May 21, 2026, 11:10 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
FODMAP diet
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced May 21, 2026, 11:10 PM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Irritable Colon, Irritable Bowel Syndrome (IBS)
Interventions
Alosetron
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older · Female only
Enrollment
702 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
177
States / cities
Birmingham, Alabama • Calera, Alabama • Tuscaloosa, Alabama + 149 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced May 21, 2026, 11:10 PM EDT