Biomed NAG (N-acetyl-glucosamine) is a single ingredient product that provides the body with the precursors required to repair wounded tissue and replace the mucous membranes of the intestinal lining. Persons suffering from ulcers, I.B.S., Crohn’s disease, colitis and other inflammatory disorders lack the ability to naturally manufacture enough n-acetly-glucosamine to maintain the protective barrier that safeguards the intestinal lining from digestive enzymes and other potentially damaging intestinal contents.