WOW I really missed point on that one...sorry my bad....speed and ephedrine are different entity's!!
Speed...we all know the results
Ephedrine..if your talking natural..an alkaloid....a constituent of the ephedra plant doesnt have anywhere near the same effects as speed ( processed version of ephedrine and psuedoephedrine+++)
BTW did u know Ephedra, a restricted herb in my country,acts as a mild stimulant(a little better than caffeine), asthma relief, hayfever, bronchitis...unfortunately due to it having a stimulating effect elevated metabolism and cardiac rates occur(hand in hand)..thus the dangers... As a Naturopath I would strongly advise you to seek a professional opinion before just taking this herb, it does have a few contraindictions
BTW it can be smoked(just like hundreds of herbs) as a great form of asthma relief...go figure!!
Permanent weight loss will only result from a mindset/lifestyle change, not any miracle/wonder drug will do that for a person