Nuun Vitamins Electrolyte is a natural vitamin and electrolyte enhanced drink tablet for active lifestyle. Provides 11 vitamins and minerals for health, as well as electrolytes for hydration. Full electrolyte profile with added vitamins + minerals. Perfect for providing healthy + delicious hydration for all day use. 12 calories per serving. Each tab makes a 16 oz. drink, 12 tabs per tube. Gluten free & vegan.