What It Actually Is
Glucomannan is extracted from the root of the konjac plant and is one of the most water-absorbent dietary fibers known, expanding significantly when it meets liquid in the stomach.
What Research Generally Shows
Because it expands and slows digestion, glucomannan has research behind supporting satiety β genuinely feeling fuller rather than just suppressing appetite chemically.
Why It's Dosed At 500mg
500mg is a meaningful dose, though EU-approved doses for a satiety claim are often higher (around 3-4g daily across multiple servings) β worth knowing if satiety is your main reason for interest.