I used to get them really bad years ago, but i hardly ever get them now. I discovered msg, and anything to do with soy gave them to me. Tried dif pain killers, but what worked for me is this. A glass of coke and two plain, uncoated aspirin. The caffeine in the coke, and the blood thinning in the aspirin gets the blood flowing through the head again. I've tried coffee, and it doesn't work as good as coke.