http://www.fda.gov/oc/initiatives/ephedra/february2004/qa_020604.html
U.S. Food and Drug Administration
FDA published a final rule concluding that dietary supplements containing ephedrine alkaloids (ephedra) present an unreasonable risk of illness or injury under conditions of use suggested or recommended in the labeling, or if the labeling is silent, under ordinary conditions of use, and are therefore adulterated under Section 402(f)(l)(A) of the Federal Food, Drug, and Cosmetic Act.