This is like the cart before the horse, isn't it? Just saying, research before buying. While it might be great for you bought it for, but it might also be bad for you in other ways, be careful. saw the ad in a mag, and wanted to find out about it, but I will wait till I see some reviews before venturing and buying it. Since you already bought it, and had a good first time experience, please post your reviews as you continue to use it. Maybe do a day on day off and compare the days to get a better feel as to how it affects your workouts. Some things to look for:
How long does the energy last
Are you focused when in the gym (some pre drinks give energy, but no focus)
Does it give you a crash once it wears off.