Use of 2-(5S-Methyl-2-oxo-4R-phenyl-pyrrolidin-1-yl)-acetamide or its pharmaceutically acceptable salt in manufacture of a medicament for prophylaxis and treatment of seizure.Uso de 2-(5 S-Metil-2-oxo-4R-fenil-pirrolidin-1-il)-acetamida (I) o una sal farmacéuticamente aceptable en la manufactura de un medicamento para profilaxis y tratamiento de convulsiones.