Rifaximin 3 Times/Day (TID) for Non-Constipation Irritable Bowel Syndrome (IBS) (TARGET 1)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Salix Pharmaceuticals
ClinicalTrials.gov Identifier:
NCT00731679
First received: July 16, 2008
Last updated: June 30, 2014
Last verified: June 2014
  Purpose

To evaluate the efficacy of a 14-day course of rifaximin given 3 times a day vs. placebo in providing adequate relief of IBS symptoms.


Condition Intervention Phase
Non-Constipation Irritable Bowel Syndrome
Drug: Rifaximin
Drug: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
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

Resource links provided by NLM:


Further study details as provided by Salix Pharmaceuticals:

Primary Outcome Measures:
  • Proportion of Subjects Who Had Adequate Relief of Global IBS Symptoms for at Least 2 of the 4 Weeks During the Primary Evaluation Period (ie, Weeks 3 Through 6). [ Time Frame: 4 weeks ] [ Designated as safety issue: No ]
    The primary outcome measure is assessed during the 4-week period (ie, Weeks 3 through 6) immediately following 2 weeks of treatment with study drug. Adequate relief of global IBS symptoms was defined as a response of "yes" to the following question, which was asked weekly (every 7 days): "In regard to all your symptoms of IBS, as compared to the way you felt before you started study medication, have you, in the past 7 days, had adequate relief of your IBS symptoms? [Yes/No]"


Secondary Outcome Measures:
  • Proportion of Subjects Who Had Adequate Relief of IBS-related Bloating for at Least 2 of the 4 Weeks During the Primary Evaluation Period (ie, Weeks 3 Through 6). [ Time Frame: 4 weeks ] [ Designated as safety issue: No ]
    The secondary outcome measure is assessed during the 4-week period (ie, Weeks 3 through 6) immediately following 2 weeks of treatment with study drug. Adequate relief of bloating was defined as a response of "yes" to the following question, which was asked weekly (every 7 days): "In regard to your symptom of bloating, as compared to the way you felt before you started study medication, have you, in the past 7 days, had adequate relief of your IBS symptom of bloating? [Yes/No]."


Enrollment: 623
Study Start Date: July 2008
Study Completion Date: September 2009
Primary Completion Date: August 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: Placebo
Subjects received placebo tablets 3 times daily for 2 weeks and were followed for 10 weeks after completion of the treatment period.
Drug: Placebo
Experimental: Rifaximin
Subjects received rifaximin 550 mg tablets 3 times daily for 2 weeks and were followed for 10 weeks after completion of the treatment period.
Drug: Rifaximin

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Confirmed IBS diagnosis per Rome II for diagnosis of IBS.
  • Colonoscopy within 2 years as part of IBS diagnostic evaluation.
  • Has active symptoms of non-constipation IBS at baseline as measured by average daily scores for abdominal pain/discomfort, bloating, and stool consistency.

Exclusion Criteria:

  • Symptoms of constipation.
  • History of other gastrointestinal diseases.
  • Type 1 or 2 diabetes.
  • Lactose intolerance not controlled by lactose-free diet.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00731679

  Show 96 Study Locations
Sponsors and Collaborators
Salix Pharmaceuticals
Investigators
Study Director: Enoch Bortey Salix Pharmaceuticals
  More Information

Publications:
Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Salix Pharmaceuticals
ClinicalTrials.gov Identifier: NCT00731679     History of Changes
Other Study ID Numbers: RFIB3007
Study First Received: July 16, 2008
Results First Received: June 30, 2014
Last Updated: June 30, 2014
Health Authority: United States: Food and Drug Administration

Keywords provided by Salix Pharmaceuticals:
IBS
Abdominal pain
Bloating
Diarrhea
Rifaximin

Additional relevant MeSH terms:
Syndrome
Irritable Bowel Syndrome
Disease
Pathologic Processes
Colonic Diseases, Functional
Colonic Diseases
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Rifaximin
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions
Gastrointestinal Agents

ClinicalTrials.gov processed this record on September 30, 2014