Mesalamine is widely used in the treatment of inflammatory bowel diseases (IBD), particularly ulcerative colitis and sometimes Crohn’s disease. It acts as an anti-inflammatory agent that works locally in the lining of the colon to reduce inflammation, swelling, and irritation. By modulating the production of inflammatory mediators such as prostaglandins and leukotrienes, Mesalamine helps control symptoms like abdominal pain, rectal bleeding, and diarrhea, while also supporting mucosal healing. Its targeted action in the gastrointestinal tract makes it effective for both inducing remission during active flare-ups and maintaining remission to prevent relapses.