We don't have synonyms for ergotamines yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ergotamine and protamines.
(n) :
(organic chemistry, biochemistry, pharmacology) An alkaloid, extracted from ergot, that causes constriction of blood vessels and has been used to treat migraine; it is related to lysergic acid.
(n) :
(organic chemistry, biochemistry, pharmacology) An alkaloid, extracted from ergot, that causes constriction of blood vessels and has been used to treat migraine; it is related to lysergic acid.