Best Value for 3,000 mg. Functional Fiber. Fat-Binding Power. 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. Some studies suggest that a diet rich in fiber can help reduce the transit time of foods in the digestive system so less fat is 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. Natural Max Diet line includes high-quality products that are formulated and designed with some of the most renowned ingredients available. Each product is thoughtfully created and designed to provide positive options for weight management when used in conjunction with associated Diet Plan.