You sweat, Nuun Active replenishes. Nuun’s signature profile of 4 key electrolytes help your body make the most of the water you’re drinking. Nuun drink tabs are portable, taste great, and deliver a fast-absorbing electrolyte blend without the sugar or waste of bottled sports drinks. Each tube of Nuun contains 10 effervescent tablets. Each tablet makes 16-Ounce of Nuun, and delivers 360 mg Sodium/100 mg Potassium/25 mg Magnesium/13 mg Calcium, electrolytes that help maintain fluid balance, prevent cramping, and aid in efficient muscle performance. Nuun is good for your body (less than 1g of carbs, low calories, no high-fructose corn syrup, no artificial flavors or colors), and good for the earth, one tube prevents the need for ten 16oz plastic bottles from sugar-ADE sport drinks.