Theres a new product from legalgear.com called PowerTrain. Its an ephedrine free, energy booster . You may want to check it out or try some green tea.

I raise my carb intake when I powerlift to increase energy natuarally, pastas, breads, also eating 2-3 bananas gives a good boost too.
I stay away from the energy boosters because they make my heart race and I feel like shit when I come down off em, but it is an advantage to some, I just prefer the natural way.