At the point of exhaustion, "Pure Fuel" provides the energy you need to break through and keep going. Twinlab Nutrition for Improved Performance  0 Fat 0 Carbs 0 Sugar 0 Calories Very Low Sodium 100% Energy Your liquid energy supplement shouldn't be laden with things you don't really want- calories, sodium, carbs, sugar. Don't let these slow you down. Twinlab Pure Fuel was formulated from an athelete's perspective: great taste, 100% performance.