Promax protein bars are designed with different sweeteners to help optimize glycemic response. Some natural sweeteners, like dextrose, enter the bloodstream rapidly. Others, such as fructose, break down much slower. In a meal or nutrition supplement, when a profile of varying levels of sugars are combined with protein and fat, it creates a product that gradually increases blood glucose levels (associated with energy levels) and maintains them for an extended period of time. Stevia is used in Promax Lower Sugar as a non-nutritive sweetener and elicits no glycemic response. If you are looking for Promax protein bars with lower sugar, Promax Lower Sugar is a great choice.