Glucomannan is a dietary fibre derived from the root of the Amorphophalli Konjac plant and is one of the richest natural sources of dietary fibre available. Used for hundreds of years in traditional cooking recipes, it is now a very popular dietary supplement. When taken in optimal doses as part of a low calorie diet, scientific tests have established that Glucomannan aids weight loss goals by absorbing up to 50 times its weight in water, causing it to expand in the stomach. This increases the feeling of fullness, therefore encouraging the user to consume fewer calories. Click on the Product for full information for your absolute peace of mind.