Vodpop,

I was on Topamax for about 4 yrs. 75mg 2x day. This was for migraines with aura. I would still have break thru migraines. I think I became use to the Topamax. I then started having seizures for the first time this past Oct. Was taken off the Topamax and put on several different meds. Now on Keppra 500mg 2xday and Dilantin 130mg in morn and 160 mg at night. I had a lot of migraines after being taken off the Topamax? Maybe system just had to adjust.
I would ask your dr. about the dosage. It can be raised. The dose you are on now is low. Do you have any side effects though from the 75mg 2x day?
Good luck and don't be afraid to ask him/her.

Garney