NCT05976165 · Mayo Clinic
A Study of Breath Testing for Small Intestinal Bacterial Overgrowth
What this study is about
Researchers hope to determine how often small intestinal bacterial overgrowth occurs after taking proton pump inhibitors.
View original scientific description
Researchers hope to determine how often small intestinal bacterial overgrowth occurs after taking proton pump inhibitors.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Predominant symptoms of gastroesophageal reflux disease including heartburn, regurgitation
- Subjects must be able to give appropriate informed consent
Exclusion criteria
- Prior diagnosis of SIBO
- Use of PPIs or H2R-anatagonstists in the prior 3 months
- Major concomitant illness (renal, hepatic, rheumatologic or cardiovascular disease, or malignancy)
- Antibiotic therapy within one month
- Prior gastrointestinal surgery including esophageal, gastric, and small or large bowel surgery
- Previously diagnosed irritable bowel syndrome or inflammatory bowel disease
- Individuals who are pregnant or breast feeding
- Patients with plans to become pregnant
- Inability to take PPIs, including allergy/sensitivity
Where
- Jacksonville, Florida
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Feb 12, 2026 · Source of record for eligibility and locations