ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth

Mark Pimentel, Richard J. Saad, Millie D. Long, Satish S.C. Rao

Research output: Contribution to journalArticlepeer-review

211 Scopus citations


Small intestinal bacterial overgrowth is defined as the presence of excessive numbers of bacteria in the small bowel, causing gastrointestinal symptoms. This guideline statement evaluates criteria for diagnosis, defines the optimal methods for diagnostic testing, and summarizes treatment options for small intestinal bacterial overgrowth. This guideline provides an evidence-based evaluation of the literature through the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) process. In instances where the available evidence was not appropriate for a formal GRADE recommendation, key concepts were developed using expert consensus.

Original languageEnglish (US)
Pages (from-to)165-178
Number of pages14
JournalThe American Journal of Gastroenterology
Issue number2
StatePublished - Feb 1 2020

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology


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