A therapeutic or preventive agent for intractable epilepsy comprising as an active ingredient a compound represented by R<2>-CH2CONH-R<1> (I), wherein R<1> is a phenyl group or a pyridyl group, which may have a substituent and R<2> is a 2-oxo-1-pyrrolidinyl group which may have a substituent.
REMEDIES OR PREVENTIVES FOR INTRACTABLE EPILEPSY