A patient with known non-alcoholic liver cirrhosis and epilepsy is brought to the ED after an episode of tonic clonic seizure. The patient has been non-compliant with their antiepileptics. EMS has already established venous access and administered multiple doses of lorazepam, but the patient has another seizure episode in the ED. Which is the best traditional antiepileptic medication to use at this point in addition to consideration of RSI with propofol?