I have a 20 year history of crippling migraines. I would try imitrex and thought I was cured and then would become immuned to it same with zomig, fiornal w/codine, maxalt...the list is long. I went through MAYO for answers..nothing. I might go a month with no migraine....then BOOM everyother day for 2 months. I missed half of every week with either a headache or waking up from...