While there's some preliminary evidence suggests the glucomannan may increase feelings of fullness, it's too soon to recommend the supplement for weight loss. A dietary supplement made from chitin, chitosanis said to bind to dietary fat in the intestines. If you're considering weight-loss pills, be sure to talk to your doctor, especially if you have health problems, take prescription drugs, or are pregnant or breast-feeding. The oral supplement is effortless to use, requiring no external effort. It is also at times credited with brain and brain and digestive health.