A Study of Breath Testing for Small Intestinal Bacterial Overgrowth

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