Repurposing drugs in oncology

Drug repurposing (repositioning) is the process of developing new indications for existing drugs. The aim of repurposing drugs in oncology is applying existing,
well-characterized and well-used non-cancer drugs as agents in anticancer treatment. The present review summarized recent information about the anti-cancer effects and mechanisms of anti-cancer action for several drugs, commonly used for other medical indications (nitroglycerin, diclofenac, metformin, cimetidine, mebendazole).