The present invention relates to a complex preparation comprising clopidogrel, an HMG-CoA reductase inhibitor, and a separation membrane containing a hydrophobic compound. More particularly, an objective of the present invention is to provide the complex preparation comprising clopidogrel and the HMG-CoA reductase inhibitor, wherein the complex preparation is intended for preventing or treating a cardiovascular disease, which has excellent storage stability by preventing a decrease in the stability of the HMG-CoA reductase inhibitor.
