Hi,
There is nothing good about taking ephedra for diet pills. It will cause your heart to beat faster and may even cause cardiac problems. It is a stimulant and it not good for you in any dose.
Even though you cant buy this in stores, it is available through the internet from non-reputable sites.
Check out this for more info.
http://www.wisegeek.com/are-there-any-safe-diet-pills.
Take care!
PhD Nurse
10 yrs Medical RN, 25+ yrs Psychiatric RN, Psych NP 15 yrs, Psychotherapy & Medication