This fiber comes from the root of the konjac plant and passes through the small intestine almost entirely undigested — that's what makes it so viscous.
Once it reaches the large intestine, resident bacteria ferment it, and that fermentation is the step most closely tied to gut-brain signaling in current research.
It's listed first on the BrainLive label and works alongside two other fermentable fibers rather than on its own.
In the BrainLive formula: Konjac Glucomannan is one of five named actives — see the full mechanism on how BrainLive works.