Mesalamine is a medication commonly used to treat inflammatory bowel diseases, such as ulcerative colitis and Crohn's disease. It works by reducing inflammation in the lining of the intestines, which helps alleviate symptoms like abdominal pain, diarrhea, and rectal bleeding. Mesalamine is available in various forms, including tablets, capsules, enemas, and suppositories, allowing for targeted treatment depending on the location and severity of the inflammation. As with any medication, it's important to follow your healthcare provider's instructions and discuss any potential side effects or interactions with other medications you may be taking.