Complex Carbohydrate No Artificial Sweeteners No Aspartame No Sucralose No Acesulfame-K Non-GMO GMP Quality Assured Vegetarian/Vegan NOW Carbo Gain is pure maltodextrin, a complex carbohydrate derived from non-GMO corn. Maltodextrin is comprised of "glucose polymers," which are chains of glucose molecules that are easy for the body to digest and assimilate.