Irritable Bowel Syndrome (IBS)

Diagnosis and management of IBS.

Reviewed by Dr Kola Tytler MBBS CertHE MBA MSt MRCGP (General Practitioner)

Last reviewed: 21 October 2025

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regional clinical guidance

Irritable Bowel Syndrome (IBS): guidance by region

Recommendations, thresholds and pathways can differ. Open the page written for the jurisdiction you need.

United StatesIrritable bowel syndrome in adultsDigestive · reviewed 2026-08-20 CanadaIrritable bowel syndrome (IBS) in adultsDigestive · reviewed 2026-08-20 AustraliaIrritable bowel syndrome (IBS) in adultsDigestive · reviewed 2026-08-20

Clinical Guidelines

CKS: Irritable bowel syndrome

NICE guideline [CG61]

NICE guideline [CG61]: Irritable bowel syndrome in adults: diagnosis and management

NICE guideline CG61: Irritable bowel syndrome in adults: diagnosis and management

ACG Clinical Guideline: Management of Irritable Bowel Syndrome

AGA Clinical Practice Guideline on the Pharmacological Management of Irritable Bowel Syndrome With Constipation and Irritable Bowel Syndrome With Diarrhea

British Society of Gastroenterology guidelines on the management of irritable bowel syndrome

NICE Clinical Guideline 61: Irritable bowel syndrome in adults: diagnosis and management

World Gastroenterology Organisation Practice Guideline: Irritable Bowel Syndrome (IBS)