there are new ECA products now, with nor-ephedrin in them. havent heard much about them.
you could stick with what works and try a 3 weeks on, 1 week off regime.
fact is, this is the most effective weight loss supplement ever. it doesnt work for everyone. but when it does, it does.
funny thing is i noticed that i dont really sweat a lot while on it. i take ripped fuel from twin labs. and i used to sweat like a pig before. even without reason. once i started the gym and ripped fuel though. i dont anymore! aside to increased energy etc etc.
also, i have tried REAL ephedrin hcl, aspirin and caffeine. and the twin labs supplement works better.
no idea why!
good luck, but try noit to stay on ANYTHING too long. make your body slowly accomodate your higher metabolism.
upregulate yourself basically!
------------------
This, was an opinion!