Answer
Anoro Ellipta 55 micrograms/22 micrograms inhalation powder has a shelf life of 2 years before its tray is opened.
Sources for this answer
- ANORO ELLIPTA 55 micrograms/22 micrograms inhalation powder, pre-dispensedGlaxoSmithKline UK · emc · SmPC §6.3 Shelf life · Version 17Document updated
Sources checked