Well DMAA/Caffeine combo was my first thing with uppers not that its much of an upper but I was heavily into bodybuilding and using preworkout supplements at the time, initially DMAA was useful with caffeine but it looses its effectiveness very fast and will provide nothing but side effects, its not like typical stimulants where more will give you the desired effects along with sides, it will just give sides with no desired effects. DMAA really is more bodyload with a wierd psycological push and focus, but don't expect euphoria, its more of a wierd strong focus which is perfect for weightlifting really, put it simply I would say a smoothened version of tweaked with heavy focus, but it diminishes after a few uses. Keep in mind DMAA isnt going to do anything if you have any phenethylamine stim tolerance - you will find majority of reports on the net with DMAA first timers are ones that have a tolerance to amps and anythign related and they dont get much out of it. I haven't used it for a long time but I have some left, its useless to me and leaves me feeling tweaked, in a wierd way lol
Got about 3-400mg of caffeine in me to combat this amp withdrawal... just makes me fiendish for amps... kinda