the questions says “may”
not sure I understand your criticism Tahseen? I’m not seeing sources suggesting verapamil for migraines either.
‘In past guidelines, verapamil and nimodipine (Nimotop) were originally considered effective for migraine prophylaxis. However, on reevaluation of previous studies, supporting data for verapamil and nimodipine are now considered insufficient.’ Migraine Headache Prophylaxis | AAFP
ive had this changed to cluster for the longest time in my lectures notes, i think this needs changing the sketchy image is outdated
amboss also doesnt list CCBs anywhere near firstline or verapamil https://next.amboss.com/us/article/hi0crf?q=migraine#Z29591a1bbf99342d264764dbfd22f0c4 - and verapamil shows up firstline in cluster headache article - will change and make note in extras about sketchy being wrong
FA 2022 also supports the change