BioTechUSA - Glucomannan + Chromium - 225 grams. 2As part of a reduced energy diet, glucomannan contributes to weight loss. Has glucomannan (sourced from konjac tubers) for weight loss2. Inulin 58%, glucomannan 42% (from Amorphophallus konjac tuber) (sulphur dioxide), anti-caking agent (silicon dioxide), chromium picolinate.