The content of ephedra alkaloids in herbal dietary supplements containing ephedra (ma huang) was studied. The ephedra alkaloid content of 20 ephedra-containing supplements was determined by high ...

Since it falls under the FDA category of a dietary supplement, its sale and use is entirely unregulated. In that regard, usnic acid is not unlike ephedra, another weight-loss pill that is sold ...

In a crackdown that extends beyond normal drug testing and the recent ban of products containing the stimulant ephedra ... based manufacturer of dietary supplements. It is anticipated that ...

The identified herbs, especially the "Ephedra" plant, are the foundation of this research. The researchers examined Ephedra's occurrence and potential applications during the Late Pleistocene by ...

Table 3 lists label claims for ephedra content and compares claims for (-)-ephedrine and total alkaloid content with the amounts determined by HPLC. Only 13 of the 20 supplement labels indicated ...