World Class Netrition.com brings you Chitosan. Chitosan is a naturally ocurring substance (derived from exo-skeletons of shrimp and crabs) that is chemically similar to the plant fiber called cellulose. Unlike plant fiber, however, chitosan is "magnetically" attracted to lipids and has the ability to significantly bind fat, acting like a "sponge" in the digestive tract. Chitosan is not digestible, therefore it has no caloric value! No matter how much chitosan you ingest, its calorie count remains at zero. Chitosan affects fat in the stomach before it has a chance to become metabolized. It dissolves in the stomach and converts to a gel which "traps" fat, thereby preventing its absorption and subsequent storage. Chitosan renders the fat useless to the body. Both the chitosan and the fat are excreted in the stool. Each capsule contains: Chitosan 500 mg, Calcium Ascorbate 25mg (120 Capsules per Container) .