Thats some nasty stuff. I bought some and tried it, had a can, and man, did that make me weird. A strange drunkeness, but with energy, so it sort of masked it. Made my stomach hurt too, more than normal. By my calculations, one can is roughly the equivalent of a regular American six pack of beer (non-ICE beer).
What’s inside alcoholic energy drinks?
http://www.cnn.com/2010/HEALTH/10/27/energy.drink.ingredients/index.html