High 5 energy source citrus 1000g energysource 41 is an all in one sports drink for use both during and after exercise its part of the high5 41 range so it contains 4 parts carbohydrate to 1 part protein and key electrolytes the carbohydrate content is a 21 fructose mix the ingredients used in this scientifically formulated blend of carbs and protein with key electrolytes help sustain performance during endurance exercise and help maintain hydration by enhancing the absorption of water