although contains stims, they are delivered with a transdermal and localize in one area, thus avoiding most effect on the central nervous system.
I think either or + would be a killer stack.
Leviathan Reloaded IS a stim, but it's very, very low to moderate stim. I would recommend Levi Re to people who don't like energy spikes and getting wired from normal stim supps
NSCA - CSCS