High dose verapamil (more than 240mg a day) for migraine? Is this ever employed? My migraines aren't controlled well enough at 240mg.
Migraine prevention. Yes, you can try higher doses but we need to monitor your blood pressure & heart rate (don't want either too low are a result of verapamil). And how are your bowels moving? Constipation is common side effect. Have you & your doc considered other options to prevent migraines? 3yrs ago, AAN published prevention guidelines http://alvinblin.blogspot.com/2012/04/evidence-based-migraine-prevention.html.