Objective:To establish a practical reversed-phase HPLC method to determine Felodipine Sustained-release Tablets. Methods:The Shim-pack CLC-ODS C18 column (6.0 mm×150 mm, 5 μm) was adopted.The mobile phase was a mixture of 0.025 mol/L dibasic potassium phosphate[pH to (3.00±0.05) by phosphoric acid]-acetonitrile-methanol(32∶45∶23) with a flow rate of 1.0 ml/min,the detection wavelength was set at 238 nm and the column temperature was maintained at 35℃. Results:The calibration curves were linear within the ra...