Welcome to the boards. I've been on every preventative medication there is, and everything has failed for me. Topamax and Depakote were both poison for me, for different reasons. Topamax gave me permanent brain/memory imparement and Depakote make me gain tons of weight and gave me a bad eating disorder. I am currently tapering off Cymbalta, because it just didn work for me. Plus, it was so incredibly expensive, it was a waste to keep taking it. It didn't give me any side effects, but I have heard it does work for some people. I have switched to LEXAPRO as and anti-depressant. If you could give us a brief history of your medical problems and medication history, it would help us guide you in the right direction.
Let us know how you are doing and we will try to help.
"The weather is here, I wish you were beautiful."