they put creatine, guarna extract(which is actually just "naturally occuring" caffiene, and taurine in SoBe drinks.

if i dont drink a soda for a day or two and then i drink one of those, my heart will race, and it doesnt even have a very high content of caffiene.

So if you are worried about your energy level and you body build, you shouldnt drink much soda as it were, and then drink a sobe, it will give you energy and it has a little bit of the creatine boost, plus, its not enough to make a devastating crash, just enough to get you pumping, and then the ever questioned taurine will do whatever it will do.