Sizaject Fosphenytoin Sodium Carbamazepine
ModerateCarbamazepine can lower the amount of phenytoin in your blood. Fosphenytoin Sodium turns into phenytoin inside the body, so taking the two together may make it work less well. This could make seizure control weaker. Do not stop or change either medicine on your own. If you take both, your doctor may check your blood levels and adjust the dose.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.