Excedrin Migraine and desperation

I only took Excedrin occasionally, when I got really severe migraines because it was the only thing that worked. However, one evening before going out to dinner, both my roommate and I took 2 each, and wound up severely nauseous, dizzy, shaky, with upset stomachs. It was so bad, I thought we were going to have to go to the Emergency Room, but it finally wore off. I didn't take Excedrin for over a year after that because it scared me so badly. Finally, last Christmas, I was out to dinner with family, and I took 2 pills out of desperation for my migraine, and the same thing happened again. I almost passed out in the middle of the restaurant, and had to go lie down in the car. I'll never take Excedrin again.