Migraine is a term used to describe symptoms which can occur for multiple reasons.  When you have a migraine you are not deficient in a particular drug however you may be deficient in basic minerals or your tummy might be upset; it can be structural e.g. wry neck; it can be caused by dehydration and sometimes allergy and other causes.  As a Naturopath, I will listen to your whole story, ask lots of questions, sometimes do some testing and reach a conclusion and then treat the cause as well as the symptoms with natural supplements.