Peruvoside (Encordin) is a natural cardiac glycoside that inhibits Na+/K+-ATPase to increase myocardial contractility; causes cell cycle arrest in leukemia stem cells at the G₂/M phase, and; inhibits NSCLC cell growth as a Src inhibitor; and induces apoptosis in cancer cells through MAPK Wnt / β-catenin and PI3K / AKT / mTOR .