Q71
Single choice
A 17-year-old is brought by emergency medical services to the emergency room in a postictal state after a witnessed grand mal seizure. No family member is available and the patient is unable to answer questions. Afriend who is with him says that he takes some medicine for seizures, but he doesn't know the name. On examination, you note that he has prominent gingival hyperplasia.
Of the medications listed below, which one is he most likely to be taking?