Nuun Active Hydration is a line of electrolyte enhanced drink tablets designed to keep you optimally hydrated wherever your active lifestyle and athletic endeavors take you. You sweat, Nuun replenishes. Packed with electrolytes, light flavor, no sugars or carbs, and portable, Nuun Active Hydration is the perfect sports drink. The electrolytes found in Nuun will help alleviate cramps, help muscles function, communicate and burn energy efficiently. The electrolytes that your body needs: Each tube of Nuun contains 12 tablets. Each tablet makes 16 oz. of Nuun, and delivers 360 mg Sodium / 100 mg Potassium / 25 mg Magnesium / 13 mg Calcium. Less than 1g of carbs, fewer than 8 calories. No sugar. No high-fructose corn syrup. No artificial flavors or colors. Read instructions before use.