CamelBak (R) Elixir Tangerine Orange with Caffeine provides a healthy alternative to sugary energy drinks. One sugar-free effervescent tablet of Elixir Tangerine Orange with Caffeine contains 54 mg of caffeine. The CamelBak proprietary energy blend also includes guarana, ginseng and B-vitamins. Use one tablet for every 16 oz. of water.