My opinion only - but I don't like it. People overdo it...it gives them a buzzed feeling and they take more and more. The main ingrediant, Ma Huang, is bad for your heart and kidneys. It is also banned Illinois as well - where I am orginally from. When I worked as a dancer, a lot of the girls used it to stay awake until all hours of the night and keep their wits about them. They also had the shakes, sweats, and heart palipitations. I say if you use it, be careful and in LOW doses only, and watch out for any adverse symptoms.

Good luck!!

Skylark