A Validated Reverse Phase HPLC Method for the Simultaneous Estimation of Atorvastatin Calcium and Ezetimibe in Pharmaceutical Dosage Forms

A simple, sensitive and precise reverse phase high performance liquid chromatographic method has been developed for the simultaneous estimation of Atorvastatin calcium and Ezetimibe in pharmaceutical dosage forms. The mobile phase consisted of Acetonitrile: buffer (0.1% v/v ortho phosphoric acid, P^H – 6) in the ratio 60:40 delivered at a flow rate of 1ml/min and wavelength of detection at 232nm. The retention times of Atorvastatin calcium and Ezetimibe were 3.7 min and 6.1 min respectively. The developed method was validated according to ICH guidelines. The proposed method can be used for determination of these drugs in combined dosage forms.