Metoclopramide
"I went to ER for a three day migraine after sumatriptan wouldn't work.  I was given a cocktail of Benadryl, Reglan, and toradol in an IV.  After a few minutes I became very restless and couldn't stop shaking.  My pulse and blood pressure skyrocketed.  I felt like my head was going to explode.  I called the nurse and was given more Benadryl to counteract the Reglan.  I slept great for almost 3 hours in the ER and my migraine was gone when I left."