Went to Costco over the weekand and they were giving samples of an energy drink called ZipFizz. It comes in a small container and you pour the powder into a bottle of water. You get 20 container per box for $19.99, this is a good price as the website sells it for $39.95 per box. It looks like it has hardly no carbs or sugar, lots of vitamins, with a ton of B-12 and C. The weebsite says the caffeine in one tube is equal to two shots of coffee. Has any one else tried this, I like it although I am not big on the caffeine, they say it helps absorb the vitamins?