Psyllium Bookmark Share View Topic Outline Oral PsylliumMetamucil Mechanism of ActionAbsorb water, resulting in increased faecal size and stimulation of peristalsis. Clinical UseIndicationsPrevention of constipation.Adverse EffectsFlatulenceBorborygmusWant more info like this? MedSchool Your electronic clinical medicine handbook Guides to help pass your exams Tools every medical student needs Quick diagrams to have the answers, fast Quizzes to test your knowledge Sign Up Now