[Not Available].

Acute pancreatitis (AP) is a sudden inflammation of the pancreas which often manifests as a mild disease but can be associated with high morbidity and mortality. Drug-induced AP is rare and most likely underdiagnosed. Vedolizumab is a human monoclonal antibody with gut-selective integrin antagonist effect, and it is used for treatment of inflammatory bowel disease (IBD). Budesonid is a glucocorticoid which is released in the colon and it is also used in IBD treatment. This is a case report where vedolizumab or budesonide caused acute pancreatitis in a young man with ulcerative colitis.