Welcome to the World of Ephedrine
Source 1 -
Bent S, et al. The relative safety of ephedra compared with other herbal products. AnnIntern Med. 2003;138:468-71.
Source 3 -
ChemBlink. "Ephedrine." 2009. Web.01 Apr 2009. <http://www.chemblink.com/products/299-42-3.htm>.
Source 4 -
Shekelle PG, et al. Efficacy and safety of ephedra and ephedrine for weight loss and athletic performance: a meta-analysis. JAMA. 2003 Mar 26;289(12):1537-45.
Source 5 -
Haller CA, et al. Adverse cardiovascular and central nervous system events associated with dietary supplements containing ephedra alkaloids. N Eng J Med 2000:1833-1838.
Source 6 -
Staff, Ephedrine: Fast Facts. 528. Do It Now Foundation, June 2007. Ditial.

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Often times, ephedrine won't be used purely, because it is widely known about its harsh side affects. Also, since it was traditionally used as Ephedra, profiteers already have the perfect blend. Just add a little bit of sugar for taste and you have a sellable product.