Nuun Active Electrolyte Tablets uses plant-based and non-GMO ingredients, along with being soy, gluten, and dairy free. Compared to Nuun Energy tabs, these Active tabs have a nutritional profile tilted toward maintaining electrolyte levels, and thus, maximum physical performance. Drinking plenty of water is only half of the equation. If you're sweating a lot, you need to replenish electrolytes as well. Nuun Active does that, using clean and natural ingredients to keep your internal chemistry correct. Sodium helps maintain fluid levels and prevent dehydration. Potassium prevents muscle cramps, crucial for extended or intense efforts, especially on hot days. Magnesium maintains efficiency by relaxing muscles. Proper calcium levels are required for normal muscle functioning. Drop a tab or two in your water bottle or hydration pack reservoir and enjoy the sugar-free, pleasant tast of Nuun Active Electrolyte Tabs.