After 15 years of post IED TBI migraines, I've been through all manner of meds. They recently sent me to a new neurologist who put me on a plan that would include a steadily increasing daily dose of amitriptyline, plus a different -triptan for early onset. I tried for a week, and hated how I felt.
Long story short, I'm now on a daily dose of dried ginger powder; no migraines so far for a few weeks. And in a clinical study, they found ginger 1/8 tsp was as effective as immitrex/sumitriptan (my EDC med) for early onset. No side effects, all natural, and all the collateral benefits of ginger. Recommended dose is 250mg, but best I found was 500mg in vegan capsules. When we set up our garden next year, we'll be raising ginger.