Glucomannan derived from the tubers of konjac, is a source of dietary fiber. Fiber in the diet is essential for good health. Fiber acts as a bulking agent in the body, which may produce a feeling of fullness. Glucomannan has been shown to possess many of the same properties as other polysaccharides. Glucomannan shows its beneficial effects in supporting the digestion by providing the dietary fibers. It shows its favorable effects in reducing the weight. Glucomannan is a dietary fiber source from the root of the konjac plant.Glucomannan is an excellent addition to a sensible weight loss program.