PGX is a patented super fibre. When PGX is taken with meals, it expands in the stomach over a 30-minute time frame. This process creates a feeling of fullness by absorbing water and filling the stomach by slowing digestion. By slowing the release of glucose into the bloodstream, PGX helps you feel full longer and reduces food cravings. Vitasave.ca offers the complete line of PGX products including Natural Factors PGX Satisfast Protein Bars, PGX Daily Capsules and PGX Slimstyles Meal Replacment.