Mesacol 400mg contains Mesalamine (Mesalazine), an anti-inflammatory drug used primarily to treat inflammatory bowel diseases (IBD), such as ulcerative colitis and Crohn's disease. It works by reducing inflammation in the lining of the colon and rectum, helping relieve symptoms such as diarrhea, rectal bleeding, and stomach pain. Mesacol 400mg is a trusted therapy for long-term maintenance and control of IBD symptoms.