Imfinzi 500mg injection is an anticancer drug belonging to the class of Anti-PD-1 monoclonal antibodies, containing the active ingredient Durvalumab. It is used to treat non-small cell lung cancer(has not spread outside your chest ), small cell lung cancer(has spread within your lungs), and biliary tract cancers(cancer of the bile ducts). Tell your doctor if you have had an organ transplant, liver problems, lung or breathing problems, or autoimmune disease (the body’s immune system attacks its own cells) before taking this injection.