Powered by unique ION4 Advanced Electrolyte System to help replenish the four electrolytes you lose when you sweat: sodium, potassium, calcium and magnesium. Zero sugar means sugar-free. All the hydration you need with none of the calories. Sweat, hydrate, help replenish electrolytes, repeat. Hydrating your game with the taste of fruit punch. Everything a sports drink should be, plus vitamins B3, B6 and B12.