Colazal

List of products in the National Drug Code with proprietary name colazal. Balsalazide is used to treat a certain bowel disease (ulcerative colitis). It helps to reduce symptoms of ulcerative colitis such as diarrhea, rectal bleeding, and stomach pain. Balsalazide belongs to a class of drugs known as aminosalicylates. It works by decreasing swelling in the colon.