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

ClinicalTrials.gov ID: NCT00724126

Public ClinicalTrials.gov record NCT00724126. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

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ClinicalTrials.gov public records Last synced Jul 21, 2026, 5:17 PM EDT

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

Official title

A Phase 3, Randomized, Double-blind, Placebo-controlled, Multicenter Study to Assess the Efficacy and Safety of Rifaximin 550 mg TID in the Treatment of Subjects With Non-Constipation Irritable Bowel Syndrome

Study identification

NCT ID: NCT00724126
Recruitment status: Completed
Study type: Interventional
Phase: Phase 3
Lead sponsor: Bausch Health Americas, Inc.; Industry
Enrollment: 637 participants

Conditions and interventions

Conditions

Non-Constipation Irritable Bowel Syndrome

Interventions

Rifaximin Drug
Placebo Drug

Drug

Eligibility (public fields only)

Age range: 18 Years and older
Sex: All
Healthy volunteers: Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Jun 30, 2008
Primary completion: Jul 31, 2009
Completion: Aug 31, 2009
Last update posted: Nov 28, 2019

2008 – 2009

United States locations

U.S. sites: 88
U.S. states: 29
U.S. cities: 86

Facility	City	State	ZIP	Site status
Not listed	Anniston	Alabama	36207	—
Not listed	Birmingham	Alabama	35205	—
Not listed	Huntsville	Alabama	35801	—
Not listed	Tempe	Arizona	85282	—
Not listed	Anaheim	California	92801	—
Not listed	Carmichael	California	95608	—
Not listed	Chula Vista	California	91910	—
Not listed	Concord	California	94520	—
Not listed	Garden Grove	California	92840	—
Not listed	Laguna Hills	California	92653	—
Not listed	Lakewood	California	90712	—
Not listed	Los Angeles	California	90048	—
Not listed	Monterey	California	93940	—
Not listed	Orange	California	92868	—
Not listed	Roseville	California	95661	—
Not listed	San Carlos	California	94070	—
Not listed	San Francisco	California	94117	—
Not listed	Bristol	Connecticut	06010	—
Not listed	Hamden	Connecticut	06518	—
Not listed	Newark	Delaware	19713	—
Not listed	Boca Raton	Florida	33486	—
Not listed	Hollywood	Florida	33021	—
Not listed	Largo	Florida	33777	—
Not listed	New Port Richey	Florida	34655	—
Not listed	New Smyrna Beach	Florida	32168	—
Not listed	Port Orange	Florida	32127	—
Not listed	St. Petersburg	Florida	33709	—
Not listed	Tampa	Florida	33607	—
Not listed	Zephyrhills	Florida	33542	—
Not listed	Atlanta	Georgia	30342	—
Not listed	Macon	Georgia	31201	—
Not listed	Elkhart	Indiana	46514	—
Not listed	Kansas City	Kansas	66160	—
Not listed	Topeka	Kansas	66606	—
Not listed	Bowling Green	Kentucky	42104	—
Not listed	Metairie	Louisiana	70006	—
Not listed	Monroe	Louisiana	71201	—
Not listed	Baltimore	Maryland	21229	—
Not listed	Elkridge	Maryland	21075	—
Not listed	Wellesley	Massachusetts	02481	—
Not listed	Ann Arbor	Michigan	48109	—
Not listed	Troy	Michigan	48098	—
Not listed	Wyoming	Michigan	49519	—
Not listed	Mexico	Missouri	65265	—
Not listed	Sicklerville	New Jersey	08081	—
Not listed	Voorhees Township	New Jersey	08043	—
Not listed	Albuquerque	New Mexico	87102	—
Not listed	Great Neck	New York	11021	—
Not listed	Mineola	New York	11501	—
Not listed	New York	New York	10016	—
Not listed	North Massapequa	New York	11758	—
Not listed	Pomona	New York	10970	—
Not listed	Stony Brook	New York	11790	—
Not listed	Boone	North Carolina	28607	—
Not listed	Chapel Hill	North Carolina	27514	—
Not listed	Charlotte	North Carolina	28209	—
Not listed	Greensboro	North Carolina	27403	—
Not listed	Greensboro	North Carolina	27408	—
Not listed	New Bern	North Carolina	28562	—
Not listed	Wilmington	North Carolina	28401	—
Not listed	Winston-Salem	North Carolina	27103	—
Not listed	Canton	Ohio	44718	—
Not listed	Cincinnati	Ohio	45242	—
Not listed	Dayton	Ohio	45415	—
Not listed	Downingtown	Pennsylvania	19335	—
Not listed	Newtown	Pennsylvania	18940	—
Not listed	Pittsburgh	Pennsylvania	15206	—
Not listed	Sayre	Pennsylvania	18840	—
Not listed	Anderson	South Carolina	29621	—
Not listed	Columbia	South Carolina	29203	—
Not listed	Bristol	Tennessee	37620	—
Not listed	Chattanooga	Tennessee	37421	—
Not listed	Franklin	Tennessee	37067	—
Not listed	Germantown	Tennessee	38138	—
Not listed	Jackson	Tennessee	38301	—
Not listed	Kingsport	Tennessee	37660	—
Not listed	El Paso	Texas	79902	—
Not listed	Houston	Texas	77024	—
Not listed	Lewisville	Texas	75057	—
Not listed	Plano	Texas	75075	—
Not listed	San Antonio	Texas	78229	—
Not listed	Salt Lake City	Utah	84107	—
Not listed	Burlington	Vermont	05401	—
Not listed	Chesapeake	Virginia	23320	—
Not listed	Fairfax	Virginia	22031	—
Not listed	Spokane	Washington	99208	—
Not listed	Milwaukee	Wisconsin	53215	—
Not listed	Milwaukee	Wisconsin	53226	—

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT00724126, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Nov 28, 2019 · Synced Jul 21, 2026

Open the official record

The complete protocol, eligibility criteria, and contact information for NCT00724126 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →