Skip to Content
Medical Term:


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.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.