Objective: To study on pharmacokinetic characteristics of ellagic acid microspheres in rabbits by oral administration. Method: Orifice method was used to prepare ellagic acid microspheres,HPLC was employed to determine the concentration of ellagic acid with acetonitrile-0. 1% phosphoric acid solution( 23∶ 77) at a flow rate of 0. 8 m L·min~(-1),detection wavelength was set at 254 nm,column temperature was controlled at30 ℃. Pharmacokinetic parameters differences of ellagic acid microspheres and ellagic acid...