Gastrointestinal Disorder Treatment Guidelines

Introduction to IBS Treatment

The British Society of Gastroenterology warns against unproven diagnostic or therapeutic approaches incentivised by financial or reputational gain 1

For IBS with constipation, soluble fiber (ispaghula) starting at 3-4g/day is recommended, as per the British Society of Gastroenterology and American Gastroenterological Association guidelines 1
For IBS with diarrhea, loperamide is suggested for managing diarrhea symptoms, and tricyclic antidepressants are effective for abdominal pain, according to the American Gastroenterological Association and the American College of Gastroenterology 2, 3
Antispasmodics like dicyclomine show efficacy for pain and cramping in IBS with diarrhea, as per the American College of Gastroenterology guidelines 3

Tricyclic antidepressants rank first for pain management in general IBS symptoms, and are particularly effective for right-sided abdominal pain, but should be used with caution in constipation-predominant IBS, as recommended by the American College of Gastroenterology 3, 4
Antispasmodics, such as dicyclomine, show better efficacy than other antispasmodics for IBS pain and are particularly helpful for cramping and abdominal discomfort, as recommended by the American College of Gastroenterology 4
Linaclotide (290 μg once daily) is the most efficacious secretagogue for IBS-C, effectively improving abdominal pain, bloating, and constipation, according to the American Gastroenterological Association 1
Lubiprostone (8 mcg twice daily) is less likely to cause diarrhea than other secretagogues and may be a suitable alternative, particularly for bloating symptoms, as recommended by the American Gastroenterological Association 1

Soluble fiber (ispaghula) starting at 3-4 g/day and gradually increasing is recommended for constipation with pain and bloating, as suggested by the American Gastroenterological Association 1
Insoluble fiber supplements (wheat bran) should be avoided as they may worsen symptoms, according to the American Gastroenterological Association 1
Food elimination diets based on IgG antibodies are not recommended for IBS management, as stated by the American Gastroenterological Association 1
Gluten-free diets are not recommended unless celiac disease is confirmed, as recommended by the American Gastroenterological Association 1

Assess response to secretagogues within 4 weeks and consider switching to an alternative option if inadequate response, as suggested by the American College of Gastroenterology 1
Titrate medications carefully to balance symptom relief with side effects, according to the American College of Gastroenterology 1
Consider dietary modifications alongside pharmacological treatment, as recommended by the American Gastroenterological Association 1
Peppermint oil may be considered as an adjunctive therapy for abdominal pain relief, ranking third in efficacy, according to the American College of Gastroenterology 3
Slippery elm may be considered as an adjunctive therapy rather than primary treatment for gastrointestinal symptoms, although its use is not specifically recommended in current guidelines 1