Fat-Binding Power. Marine Sourced. Functional Fiber. Chitosan is an insoluble or non-digestible fiber. Marine-sourced chitosan is produced from chitin, which is part of the shells of crustaceans including shrimp, crabs and lobsters. Products that carry the Fat-Binding Power log represent supplements with diet plans that together provide unique support for weight management. Many products are not easily recognized as beneficial for weight management. The Fat-Binding Power logo helps to identify non-traditional diet-related products. Some studies suggest that a diet rich in fiber can help reduce that transit time of foods in the digestive system so less fats available to be absorbed. Additionally, chitosan is not digestible and therefore has no caloric value. Taken before meals, fiber may help provide nutritive support for healthy weight management.