Keep your taste buds guessing with the Nuun Active Assorted 4 Pack. With four different flavors you'll stay hydrated and energized with a tasty drink. A new and improved formula features non-GMO sourced dextrose and other clean ingredients like plant-based sweeteners. Easy to use tabs quickly dissolve in water without powder or complicated mixing. Travels easily in a small tube. One tab dissolves into 16 oz. of water. Gluten, dairy, and soy-free. Dehydration happens for lots of reasons. Most people don't recognize that and only drink when they feel thirsty. Now you can One Up Your Water with Nuun, an electrolyte enhanced drink tablet formulated to dissolve in water and designed to keep you optimally hydrated wherever you are. Nuun's special formulation of electrolytes helps increase the amount of water that's absorbed into the blood stream. That means more of the water you drink is actually used to hydrate you instead of being eliminated because the electrolyte balance wasn't right. Nuun is not energy-it's designed just for hydration! Nuun's formulation is based on years of research and feedback from some of the world's top academic and practicing experts in the field of sports medicine-specifically in dehydration and hyponatremia. Nuun's development is focused on the three most important aspects of proper hydration: Speed of AbsorptionOne of the most important characteristics of what you drink while you're active is the speed at which your body can absorb it. The concentration of dissolved salts and sugars (osmolarity, for those more technically inclined) determines how fast the drink can cross from your digestive track into your bloodstream, where it can re-hydrate and replenish you. Nuun produces a hypotonic solution, so your body absorbs Nuun faster than the leading "sports drinks" or even water alone. This gives your body the ability to restore optimal water and electrolyte balance quickly and efficiently. Electrolyte ContentThe American College of Sports Medicine recommends that people who are active for more than one hour get 500-700mg of sodium for every liter of water they consume. This is up to three times the sodium amount that traditional "sports drinks" provide. Some experts in the field believe that sodium concentrations should be closer to the 700-1000mg range. In addition to other critical electrolytes, Nuun provides 700mg of sodium for every liter of drink to ensure that you are adequately replenishing your body to help you perform at your best and stay healthy. Carbohydrate ContentNuun contains no carbohydrates for a couple of reasons. The first being speed of absorption. Ingesting drinks containing high levels of carbohydrates can slow the rate at which your stomach empties, delaying the absorbance of the water and electrolytes. Carbs also increase the osmolality of what you're drinking, delaying absorption beyond the stomach. But we know some people simply want to avoid unnecessary carbs, and it doesn't make sense to consume sports drinks loaded with them. Now, if you're participating in intense exercises lasting more than 60 to 90 minutes, you should consume carbohydrates to ensure energy levels for working muscles. But how you do that is up to you. Everyone manages energy consumption differently, whether it's with sports bars, gel or other sources of calories and carbohydrates. Nuun Electrolyte Tablets contain no gluten or animal derived raw materials.