 [ Symptoms ] i am 29 years old and suffering with high blood pressure taking capoten and lophrin [ Disease ] hi this is from www drugs com oxcarbazepine may increase the blood levels and effects of diazepam you may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications contact your doctor if you experience increased side effects or your condition changes it is important to tell your doctor about all other medications you use including vitamins and herbs do not stop using any medications without first talking to your doctor hope it helps you good luck