The two brands I’ve tried are GNC brand and Twinlab.
GNC brand worked better (much more potent) but had more side effects. It boosted the hell out of my energy levels though!
Twinlab is good (less side effects) but the effect doesn’t seem to be as immediate or intense, no real effect on my energy levels. Oddly enough, I find that with Twinlab my EQ is just as strong the next morning, so it must stay in your system awhile. Good to know so you can pop it earlier in the day.
"Look what your brother did to the door!"