Fenitab Sorafenib Tosylate Carbamazepine
ModerateCarbamazepine can make your body break down Sofen (sorafenib) faster than normal. This may lower the amount of Sofen in your blood, so the medicine may not work as well as it should. St. John's wort, phenytoin, phenobarbital and dexamethasone can have the same effect.
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.