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ephedra vs. ephedrine

[ ih-fed-ruh, ef-i-druh ]
  1. any of various plants of the genus Ephedra, growing in dry regions and having branching stems with dry scalelike leaves.
[ ih-fed-rin, ef-i-dreen, -drin ]
  1. a white, crystalline alkaloid, C10H15N, obtained from a species of Ephedra or synthesized: used in medicine chiefly for the treatment of asthma, hay fever, and colds.

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