I suffered with migraines & daily headaches for years (30+), until I discovered that my body could not tolerate glutamate. Both man made (msg), and naturally occurring.

I discovered that glutamate is in everything from the foods we eat to cosmetics and medications. You have to do a lot of research to find out all the different names the food, cosmetic, and pharmaceutical industries use in their products.
I have been migraine and headache free for several years now.