Ultimate Nutrition Chitosan 500 FAT BLOC 90 Capsules Per Bottle Chitosan is a naturally occurring fiber derived from the complex sugar found in the shells of shrimp crabs and other shellfish. Chitosan has the capacity to bind lipids and fats and stands out for its ability to trap fat before it is absorbed in the body. More importantly since it is not digested chitosan has no calories. Upon oral ingestion chitosan
