Ephedrine
A plant alkaloid classified as a “sympathomimetic amine” – which are compounds that stimulate the sympathetic nervous system. Ephedrine is used medicinally as a decongestant; it also acts as a stimulant and – in combination with caffeine – can assist with weight/fat loss.
Ephedrine – along with its isomers – are found in several medicinal plants. Ephedra sinica (Ma Huang) was the principal form found in many over-the-counter diet supplements, although it is now banned for that purpose. Sida cordifolia is another common source.
Although ephedrine is still a legal, over-the-counter medication, sales are restricted due to the fact that it can be used to “cook” methamphetamine, an addictive, illegal stimulant drug.
See Paul’s review, “Ephedrine / Ephedra: Potent Fat Burner, Or Dangerous Drug?” for more information.