I've suffered from migraines for over a decade, gone through the mill with medications and side effects, been accused of drug seeking at the ER, made crazy by Topamax, etc. In other words, I know the score. So I hope you will trust me when I share with you this gaurenteed, natural migraine preventitive. It is called Petadolex. It was a Harvard trained neurologist who gave me my first bottle as a sample. It is an extract from the root of the butterbur plant and has no side effects. It works by stopping the cerebral arteries from dilating, which, no matter what your trigger, is what causes migraine pain. If, like me, you are tired of side effects from medications like Topamax, I urge you to give this a 30 day trail. What have you got to lose except the terrible pain of migraine? Check it out at www.migraineaid.com or shop online at Better Health International which is where I buy it a little cheaper. It REALLY WORKS! If I sound like a Petadolex salesman, sorry, but I only want to spread the word. Best wishes to all who suffer. Christine