Abstract: Described herein is a method of improving seizure control in a patient experiencing uncontrolled seizures persisting 10 minutes or more, comprising administering fenfluramine or a pharmaceutically acceptable salt, base, acid or amine thereof, at a dose of from 0.2 to 1.2 m/kg/day for a period of about 12 hours to about 7 days to a patient having been put into a therapeutic, medically-induced coma via a general anesthetic; and after about 12 hours to about 7 days, weaning the patient from the general anesthetic and assessing whether the seizure control has improved as compared to a pre-treatment time point. The patient experiencing seizures may have epilepsy or epileptic encephalopathy that has led to established status epilepticus (SE), refractory status epilepticus (RSE) or super-refractory status epilepticus (SRSE).