Glucomannan from Konjac Root

Glucomannan is a dietary fiber usually made from the root of the konjac plant. It's historically been used as food and medicine in Asian cultures.

Glucomannan might work in the stomach and intestines by absorbing water to form a bulky fiber which treats constipation. It might also slow the absorption of sugar and cholesterol in the gut, helping to control sugar levels in people with diabetes and reduce cholesterol levels.

People commonly use glucomannan for constipation, diabetes, and high cholesterol. It's also used for high blood pressure, obesity, and many other conditions, but there is no good scientific evidence to support most of these uses.