There certainly is more than one generic. Perhaps your doc or pharmacist knows of ones that are less likely to cause issues. They should be the same, but it seems it could be an issue for you. I would make an inquiry. Perhaps you can go to a different pharmacist or ask your pharmacist about making a change next go around. It's possible your doc has some old samples to help you out at least a little while you do this experimentation. The only other thing I can think of is to ask your doc if you might add a small dosage of something else to your Topamax dosage (like Elavil, etc.).