Mesalazine also known as Mesalamine or 5-aminosalicylic acid, is an anti-inflammatory drug used to treat inflammation of the digestive tract ulcerative colitis and mild-to-moderate Crohn's disease. Mesalazine is a bowel-specific aminosalicylate drug that acts locally in the gut and has its predominant actions th ere, thereby having few systemic side effects. As a derivative of salicylic acid, 5-ASA is also thought to be anantioxidant that traps free radicals, which are potentially damaging byproducts of metabolism.
Asacol suppositories, Asacol foam enema and Asacol MR tablets all contain the active ingredient mesalazine, which is a type of medicine called an aminosalicylate. It is used to reduce inflammation in the intestines in a condition called ulcerative colitis