Lipozene contains Glucomannan, an all-natural fiber derived from the Konjac root.  The supplement facts on a Lipozene label provides the following information:

Serving Size:  2 capsules

Servings Per Container:  15

Proprietary Blend – 1500 mg

Amorphophallus Konjac (from Konjac root)

No known allergens in this product.

Other ingredients:  Gelatin, microcrystalline cellulose, magnesium silicate, stearic acid, titanium dioxide and FD&C blue #1.

Recommendation for Use:  As a dietary supplement for maximum results take 2 capsules 30 minutes before each meal up to 3 times per day with at least 8 oz of water.

According to Wikipedia, “Glucomannan is a water-soluble polysaccharide that is considered a dietary fiber. Glucomannan is a food additive used as an emulsifier and 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. Though there is some clinical support for potential health benefits, the U.S. Food and Drug Administration (FDA) has not approved any product containing glucomannan for the treatment of these medical conditions.”