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n. A white, odorless, powdered or crystalline alkaloid, C10H15NO, isolated from shrubs of the genus Ephedra or made synthetically. It is used in the treatment of allergies and asthma.

n. An alkaloid, found in some species of Ephedra shrubs (or prepared synthetically), used as a sympathomimetic drug.

n. A crystalline alkaloid, C10H15ON, contained in the leaves of Ephedra distachya and other species of Ephedra. It is mydriatic.

n. white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma

"These substances -- Ephedra contain a substance called ephedrine, which can produce all kinds of adverse effects in the body, rhythm disturbances, hypertension, stroke, sudden death, heat illness, you can go on."

alkaloid    bronchodilator   

naloxone    meperidine    hyoscyamine    mescaline    methamphetamine