Irbesartan Bookmark Share View Topic Outline Oral IrbesartanAvapro, Karvea Mechanism of Action Competitively inhibits the action of angiotensin II at AT1 receptors.Clinical UseIndicationsContraindicationsAdverse Effects Want 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