it will only reduce the risk of seizures for a short time.. i believe i have heard that carisoprodol is actually known for causing seizures itself when it wears off, something like a rebound seizure from going from high threshold to low threshold (kinda like drinking alcohol for benzo w/d, it works while you're drinking and drunk but when the alcohol wears off your risk is raised).
EDIT: i may be wrong though, so don't quote me on that lol.
a google search for "carisoprodol seizure threshold" might show something like what im saying.