Pure and Natural Sweetener Easily Utilized by the Body Natural Energy Source Dextrose is another name for glucose, a simple sugar that plays an important role in cellular energy production. Dextrose is actually the primary source of energy for most living organisms. NOW Real Food Dextrose is a natural sweetener with a fine texture and moderate sweetness. It’s derived from non-GMO corn and is easily utilized by your body. Dextrose is particularly beneficial for active individuals as an energy source before and during workouts, and for replenishment of energy levels post-workout. Use in place of table sugar at a 1.3 to 1 ratio.