Vitamin D

"Investigators presented the results of an observational study here at the 50th Annual Meeting of the American Headache Society, which showed that 41.8% of patients with chronic migraine were deficient in 25-hydroxyvitamin D. The study also showed that the longer individuals had chronic migraine, the more likely they were to be vitamin D deficient." (from Medscape)

Interesting! I hadn't heard much about this...sounds like taking vitamin D might be a good idea. (I would check with your doc especially when you are already taking a combination of prescription meds

I hope you don't mind me jumping in here.  Look into types of vitamin D.  Vitamin D-3 is the new thing to be taking!  Obviously it is not new.  It is also technically a hormone and not a vitamin.  It is completely necessarry for the body to function correctly and people who are deficient are subject to a whole host of problems. 

I take 4,000 IUs per day.  I know that sounds like a lot but the body makes 50,000 IU when you spend a few hours in the sun.  There is virtually no risk of toxicity.  It is also known as the "anti-biotic vitamin".  It does wonders for the immune system.  Ask your doctor about it; do an internet search.  It is amazing!  It is also quite inexpensive.  I get gel caps from costco for a reasonable price.  Good luck!  I hope you find something that helps.