Ephedra type drugs were actually removed from OTC medications because it had been shown to cause siezures, strokes, and aggravate some conditions that people weren't even aware of.
"All these deaths that make the news are from unhealthy people with existing medical conditions who overdose on it and/or use it for longer ammounts of time than they should." NOT True
Check this out -
http://www.cfsan.fda.gov/~dms/ds-ephe2.html
Just be careful. If you notice ANY problems. Including the shaking hands and other neurological problems then I would cease taking it. My suggestion is to go along with your healthy eating and excecise regimin. If you are doing any body building then you aren't going to loose the weight as quickly possibly because you aren't just loosing fat but gaining muscle. Any weight loss takes time. Congrats on loosing what you have so far. Good Job.
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"Always learn the rules so that you can break them properly." Dalai Lama
My Karma just ran over your Dogma.