Hey All!
This thread caught my eye... thought I would weigh in. 1R, 2S Norephedrine is the same chemical as PhenylPropanolamine (PPA).... which you may remember was pulled from all cold medicines after supposedly documented heart attacks, strokes, etc. PPA is basically a step down the ladder from good old methamphetamine.
BUT, saying this.... I used to pop that stuff like candy also. Other companies made it also, but Syntrax seemed to have the only one that truly did anything. Although it had a smaller dose of Yohimbine in it than other products, it is the only one I ever found that would make the hair on my arms stand on end. lol