<prompt> Anti-influenza drug which isare given through inhalation route ?AmantadineOseltamivirZanamivirRimantadine  <response>: Ans. C. ZanamivirAnti-influenza drugsAmantadine, rimantadine, oseltamivir and zanamivir.Only zanamivir is given by parenteral route intranasd or intravenous. all others are given orally.Zanamivir has lowest oral bioavailability lowest t12 shoest acting.Rimantadine has maximum plasma protein binding, while oseltamivir has minimum plasma protein binding.Rimantadine has maximum metabolism. 