I took ephedra once....
A long time ago. I was shaking and generally wigging out like a cartoon character. Total strangers were asking me if Iwas okay, and I couldn't believe this stuff was even legal.
Since then, I researched it. Lots of people have died. And hush-hush lawsuits followed.
Yes, it's effective. Insanely effective! (I got the best workout of my life, then came home and cleaned by apartment like June Cleaver on acid.) But I'll never do it again. Health first, ya know?