tokens: Moreover , KF17837 ( 0 . 625 mg / kg p . o . ) potentiated the anticataleptic effects of a subthreshold dose of L - 3 , 4 - dihydroxyphenylalanine ( L - DOPA ; 25 mg / kg i . p . ) plus benserazide ( 6 . 25 mg / kg i . p . ) .