Phenobarbital for Febrile Seizures — Effects on Intelligence and on Seizure Recurrence

Abstract
Phenobarbital is widely used in the treatment of children with febrile seizures, although there is concern about possible behavioral and cognitive side effects. In 217 children between 8 and 36 months of age who had had at least one febrile seizure and were at heightened risk of further seizures, we compared the intelligence quotients (IQs) of a group randomly assigned to daily doses of phenobarbital (4 to 5 mg per kilogram of body weight per day) with the IQs of a group randomly assigned to placebo.