It's no secret that staying on a low-fat diet can be difficult for even the most-dedicated dieters. We're all tempted to eat fatty sweets from time to time. Nobody is perfect, right When you slip up, and snack when you shouldn't, FBlock may help reduce the amount of fat that is absorbed. The active ingredient, chitosan, is a natural dietary fiber derived from shellfish that can help balance a weight/fat loss program. Chitosan fiber binds to fat and cholesterol in the intestinal tract and encapsulates them, preventing them from entering the bloodstream. The large mass of indigestible chitosan and fat is then cleared from the body naturally. (These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.)