The Camelbak Elixir Berry Flavor Sports Drink Tablets are a sugar-free effervescent tablet, loaded with electrolytes, designed specifically for a CamelBak hydration system. Elixir dissolves easily in water and won’t leave a sticky residue if used in a reservoir. Use one tablet for every 24 oz of water. Sold in an easy-to-carry portable tube. Only 10 calories per serving.