y fiber. It is a hemicellulose component in the cell walls of some plant species. Glucomannan is afood additiveused as anemulsifierand thickener. Products containing glucomannan, marketed under a variety of brand names, are also sold as nutritional supplements for constipation, obesity, high cholesterol, acne vulgaris and type 2 diabetes. Although there is some clinical support for potential health benefits, the U. S. Food and Drug Administration (FDA) has not approved any product containing glu