* EFS-PRO keeps athletes optimally fueled, hydrated and energized, even in the most demanding conditions* The primary carbohydrate in EFS-PRO is a special, low-glycemic, easy-to-digest Cyclic Cluster Dextrin* Contains the ideal ratio of high-glycemic sugars to supercharge energy production* The carb and electrolytes in EFS-PRO are engineered for hours of intense effort in the most extreme conditions* With balanced electrolytes composed of sodium, potassium, chloride, calcium, and magnesium for preventing cramps while improving hydration* The formula includes sodium citrate, which reduces stomach acidity to further ease absorption, and citric and malic acids to encourage oxygen uptake and production of ATP (the bodys energy source), helping your cells use the fuel once its delivered