a comparison of nicotinic acid , a non-narcotic analgesic and a series of injectable and oral ergot preparations tested by various methods in treating 40 patients with typical migraine indicate that ergot alkaloids are far superior in producing symptomatic relief.a comparison of ergotamine tartrate , dihydroergotamine ( dhe-45 ) and dihydroergocornine ( dho-180 ) indicated that ergotamine tartrate is the most effective and perhaps the most toxic , dhe-45 is slightly less effective and considerably less toxic , and that dho-180 is the least effective but also the least toxic .
C0149931
migraine
C0012291
dihydroergotamine