CoEnzyme Q-10 60 mg. instead of preventing migraines *caused* migraines. Figuring it was the rice bran oil that was the problem, I switched to my best brand TwinLabs 100 mg., and it still caused migraines. I am assuming the 10 mg. TwinLabs I take now is helping prevent migraines, but I have had terrible migraines lately, so I have no proof.