Imulsion, that alien fuel source from the Gears of War universe, is real and in a can. Imulsion energy drink is available now through Amazon.com. While I can't promise the drink will fill the energy needs of a post industrial society and/or cause an inter-galactic war between humans and aliens, I can say that it costs $3.99 a can and probably will not poison you.
I will not be trying the product -- I stick to coffee, the real man's energy drink. But, I don't wear "Skull Caps" that advertise video games, so maybe I'm not exactly the Imulsion target market: