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ClinicalTrials.gov public records Last synced Sep 5, 2026, 10:52 AM EDT

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Showing 1–13 of 13 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Gulf War Syndrome
Interventions
Lactulose Breath Test, Rifaximin, Placebo
Procedure · Drug
Lead sponsor
Henry C. Lin, MD
Federal
Eligibility
21 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Albuquerque, New Mexico
Terminated Phase 2 Interventional Results available

Rifaximin on Visceral Hypersensitivity

NCT03462966
Conditions
Visceral Hypersensitivity, Irritable Bowel Syndrome
Interventions
Rifaximin
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Small Intestinal Bacterial Overgrowth (SIBO)
Interventions
Liquid Tincture, GI Detox, Olivirex
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
18 Years to 60 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Sacramento, California
Conditions
Chronic Constipation, Methanogenesis
Interventions
Lubiprostone, Lubiprostone Control
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Iowa City, Iowa • Salt Lake City, Utah
Conditions
Cirrhosis of the Liver, Ascites, Spontaneous Bacterial Peritonitis
Interventions
Medical food, EnteraGam (Serum-Derived Bovine Immunoglobulin)
Other
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Transit Time and Bacterial Overgrowth Using SmartPill Capsule

NCT00577772
Conditions
Small Bowel Bacterial Overgrowth, Gastrointestinal Diseases, Stomach Diseases, Digestive System Diseases
Interventions
Xifaxan, SmartPill, Lactulose hydrogen breath test (H_2BT)
Drug · Device · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Scottsdale, Arizona
Completed Not applicable Interventional Accepts healthy volunteers Results available

Is Chronic Abdominal Pain in Pediatric Patients Due to Small Intestinal Bacterial Overgrowth?

NCT00619970
Conditions
Chronic Abdominal Pain, Small Intestinal Bacterial Overgrowth
Interventions
Lactulose Breath Test, xifaxan, placebo
Procedure · Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
8 Years to 18 Years
Enrollment
115 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Irritable Bowel Syndrome (IBS), Small Intestinal Bacterial Overgrowth Syndrome (SIBO)
Interventions
Biocidin REMOVE, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-Processed Foods, Palatability, Appetite, and Gastrointestinal Transit

NCT07600281
Conditions
Appetite, Gastrointestinal Transit, Food Processing, Food Palatability, Eating Behavior
Interventions
Palatable Ultra-Processed Food Meal, Unpalatable Ultra-Processed Food Meal, Palatable Non-Ultra-Processed Food Meal, Unpalatable Non-Ultra-Processed Food Meal
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Completed Not applicable Interventional Accepts healthy volunteers

Does Small Intestinal Bacterial Overgrowth Contribute to Functional Dyspepsia

NCT00956397
Conditions
Functional Dyspepsia, Small Intestinal Bacterial Overgrowth, Chronic Abdominal Discomfort
Interventions
Rifaximin, Lactulose Breath Test, Placebo
Drug · Procedure
Lead sponsor
Henry C. Lin, MD
Federal
Eligibility
21 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Albuquerque, New Mexico
Conditions
Crohn's Disease in Remission
Interventions
Low Sulfur Diet, Usual Diet
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Conditions
Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea
Interventions
Rifaximin, Glucose and lactulose hydrogen breath testing
Drug · Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 80 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Conditions
Chronic Diarrhea of Unknown Origin
Interventions
Crofelemer, Diagnostic tests for cause of chronic diarrhea
Drug · Diagnostic Test
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 75 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Houston, Texas