SlimStyles PGX—the weight control breakthrough! The most important advantage of SlimStyles over other weight-loss products is the clinically proven ingredient PGX (PolyGlycopleX). PGX is the result of extensive clinical research at the University of Toronto in collaboration with the Canadian Center for Functional Medicine. PGX is a completely unique blend of highly purified soluble fibers processed using advanced proprietary EnviroSimplex technology. Compared to other soluble fibers, significantly less PGX is required to obtain the same important health benefits including glucose support, appetite control and reduced food cravings. Product of Canada.