NCIt definition : The maleate salt of methylergonovine, a semi-synthetic ergot alkaloid with vasoconstrictive
and uterotonic effects. Methylergonovine stimulates serotoninergic and dopaminergic
receptors as well as inhibits the release of endothelial-derived relaxation factor.
This results in arterial vasoconstriction and increased uterine smooth muscle contractions.;