ergotamine

noun Pharmacology.

1. a crystalline, water-soluble polypeptide, C33H35N5O5, obtained from ergot, used to stimulate uterine contractions during labor and in the treatment of migraine.

n.

1. A crystalline alkaloid derived from ergot that induces vasoconstriction and is used especially in treating migraine.

1. A crystalline alkaloid derived from ergot that induces vasoconstriction and is used especially in the treatment of migraine headaches. Chemical formula: C33H35N5O5.