Scientists at the University of California, San Francisco, also said ephedra-containing products ... supplements are derived from the herbal plant ma huang, and often also contain caffeine derived ...

The related study was published by the prestigious journal Nature . “Plants discovered match the Ephedra species, which fruits were unearthed in an area of the cave dedicated for burials ...

The findings help researchers compare the pathways of these plants to extract medicinal components. They have added Ephedra to their collection of plants. "From the standpoint of studying plants ...

Hundreds of ephedra-containing supplements are currently available in the United States. Ironically, ephedra supplements vastly outnumber conventional prescription and nonprescription medications ...