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.2-(5S-甲基-2-氧-4R-苯基-吡咯烷-1-基)-乙酰胺(2-(5S-Methyl-2-oxo-4R-phenyl-pyrrolidin-1-yl)-acetamide)或其藥物學上可接受之鹽類用於製備治療及預防疾病發作之藥物的用途。