Wiktionary
antimigraine
a. (context medicine English) Preventing or acting against migraines.
Wikipedia
Antimigraine
An antimigraine drug is a medication intended to reduce the effects or intensity of migraine headache.
Examples include triptans such as zolmitriptan and ergot alkaloids such as methysergide.
Antimigraine medications are classified under "N02C" in the Anatomical Therapeutic Chemical Classification System