Skip to Content


Pronunciation: e-fed'ra

Definition: Ephedra equisetina (family Gnetaceae). Ma huang; the plant source for the alkaloid ephedrine. Indigenous to China and India, it is 0.7% to over 1% ephedrine; also contains some pseudoephedrine.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.