I am taking the drug apriso. i have uc/ibd/crohn's. what exactly is this medicine doing?

Meselamine/5-ASA: Apriso is a long-acting form of 5-aminosalicylic acid (mesalamine) which are well-established preparations used in the management of inflammatory bowel disease. These drugs are most useful for the treatment of mild to moderate flares of ulcerative colitis and, especially, for maintenance of remission. The mechanisms are complex, but involve anti-inflammatory and prevents oxidative damage.

APRISO: Apriso is a type of medication called a 5-aminosalicylate, or 5-asa, an antiinflammatory medication that reduces irritation of the colon. Apriso is a once-daily 5-asa that features intellicor® delayed- and extended-release delivery for the maintenance of remission of ulcerative colitis (uc) in adults. Studies show Apriso provides extended relief from key uc symptoms for up to 6 months.