Glucomannan Konjac Root Extract - Promotes Gastrointestinal Health, Supports Weight Management Function: Gastrointestinal Health Ingredients: Glucomannan Directions: Take two (2) capsules once daily Shipping: Ships within 48 hours on weekdays Shelf Life: 2 years Only use high quality glucomannan,1800 mg glucomannan per serving. As dietary fiber, glucomannan is not absorbed, contains no calories, has a feeling of fullness, and can reduce and delay the absorption of glucose. Glucomannan is a soluble fiber that can absorb water, retain water, and increase the volume and softness of feces through fermentation, which is beneficial to defecation and prevents constipation.