Pronunciation: er'go-tok'sen, -sin
Definition: A mixture of alkaloids obtained from ergot, consisting of 1:1:1 ergocristine, ergocornine and ergocryptine, more toxic than other natural and semisynthetic ergot alkaloids; a potent stimulant of smooth muscle, particularly of the blood vessels and uterus, and produces adrenergic blockade (chiefly of the alpha receptors).
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Examples: glitazone, GI cocktail, etc.