Abstract: A composition and an associated method of treating cancer cells by impeding cancer cell growth with the composition are disclosed. The composition includes at least a first and a second HMG-CoA reductase inhibitor, wherein the total amount of the first and second HMG-CoA reductase inhibitors is effective in synergistically impeding cancer cell growth and wherein the cancer cell growth synergistic impedance from the total amount of the first and second HMG-CoA reductase inhibitors is greater than a theoretical additive effect from the combined first and second HMG-CoA reductase inhibitors. The present composition does not simultaneously contain both a tocotrienol and an ionone when the composition contains only a first and a second HMG-CoA reductase inhibitor. The method includes treating cancer cells with the claimed composition to impede cancer cell growth.