![FIBER LEAN.](http://vfpplus.com/cdn/shop/products/box-image_8e8b40e8-f1b2-49e1-80e8-ac7257477a8d_{width}x.gif?v=1687293989)
OptiFiber® Lean features Shimizu Propol® A propolmannan—a highly pure, natural soluble fiber. Propol A is created from Amorphophallus konjac-derived glucomannan using proprietary processing techniques. This fiber has been studied for its viscosity and for its stability through the digestive tract; and studies support its health effects, such as on satiety, weight control, glucose and lipid metabolism, and bowel regularity.*