Snapshot A 25-year-old man with a history of ulcerative colitis presents to his gastroenterologist. His ulcerative colitis had been calm but recently he developed rectal bleeding and increasingly frequent stools. A colonoscopy shows diffuse inflammatory changes localized to the rectum. He is started on topical mesalazine as well as oral sulfasalazine, which contains both an anti-inflammatory and anti-bacterial component. Introduction Drugs login to view 1 more bullet Mechanism of action login to view 6 more bullets Clinical use login to view 4 more bullets Adverse effects login to view 8 more bullets