CamelBak® Elixir is Uniquely Designed for CamelBak Hydration Systems: Enhanced Hydration: A Unique Blend of Sodium and Electrolytes Helps You Hydrate Faster. Easy to Clean: With No Sugar There's No Sticky Reservoir Clean-Up! Easy to Use: Each Effervescent Tablet Dissolves Completely to Make 24 fl. oz Eliminating Mixing and Measuring Hassles Forever! Highly Portable: Small Light Weight Tube Makes for Easy Hydration On-The-Go.
"I've tried other similar products from other brands like Gu, Nuun, etc. The Camelback brand is is the only one that pleasantly flavors a whole 24-oz bottle with just 1 tablet. I love this flavor but my wife does not like it which is ok because she is also Caffeine intolerant. I prefer the flavor a bit stronger and only use 20 oz when I use one of these. The tablet does not dissolve well in ice-cold water; pour in only 1-2 oz of room temp water and let the whole tablet finish dissolving before adding the rest of cold water and ice. These tablets effervesce, in other words don't screw on your lid tight until after the tablet is completely dissolved, or else pressure will build up, and with a straw-bottle that can also lead to a pressurized jet of water squirting all over.
If you do not want Caffeine, don't get this Orange Alert flavor; it has 75mg of Caffeine per tablet.
And, the price for these here at Vitacost is so much better than at REI."