Olsalazine Sodium is primarily used in the treatment of ulcerative colitis, a chronic inflammatory condition of the colon. It works by delivering the active anti-inflammatory agent directly to the site of inflammation in the colon. This targeted approach helps to reduce symptoms such as diarrhea, rectal bleeding, and abdominal pain. It is particularly effective in maintaining remission in patients who have had previous episodes of the disease. The medication is usually taken orally, and its unique structure allows it to remain intact until it reaches the colon, where it is then activated. This minimizes systemic absorption and reduces the risk of side effects commonly associated with other anti-inflammatory drugs.