<chemical>

A vasoconstrictor found in ergot of central europe. It is an alpha-1 selective adrenergic agonist and is commonly used in the treatment of migraine headaches.

Pharmacological action: adrenergic alpha-agonists, analgesics, non-narcotic, vasoconstrictor agents.

Chemical name: Ergotaman-3',6',18-trione, 12'-hydroxy-2'-methyl-5'-(phenylmethyl)-, (5'alpha)-

(12 Dec 1998)