OBJECTIVE To study the influence of oxiracetam on the pharmacokinetic of midazolam in rats.METHODS Chromatography conditions:A chromatographic column of Diamonsil C18(250 mm×4.6 mm,5 μm) was used and the column temperature was 30 ℃.The mobile phase was acetonitrile-water(62∶38) with a flow rate of 0.8 mL·min-1.The detection wavelength was set at 225 nm,and the injected-volume was 20 μL.Each rat in test group was given oxiracetam(200 mg·kg-1,once daily) by intragastric administration for 5 days,then a single...