Stolen from bb.com---
"The plant Ephedra contains two Ephedra alkaloids: pseudoephedrine and ephedrine hydrochloride (HCL).
While pseudoephedrine is a common ingredient in over the counter (OTC) sinus and nasal decongestant formulas, ephedrine HCL has typically been used as a bronchodilator and an inducer of thermogensis (the liberation of adipose tissue for oxidation into heat - fat burning). Both pseudoephedrine and ephedrine HCL are central nervous system stimulants.
Of the two alkaloids, ephedrine HCL has been the most popular, and has been used by those looking to enhance focus, increase feelings of well being, enhance sexual abilities, lose fat, and increase training effect. It is, chemically, an amphetamine-like substance, making its abilities to enhance focus, thinking and training unsurprising."
