<prompt> Oseltamivir is -Neuramindase inhibitorNeuramindase activatorCarboxylase inhibitorCarboxylase activator  <response>: Ans. is a i.e., Neuramindase inhibitor o Oseltamivir and zanamivir are neuraminidase inhibitors and prevent the virion release by causing clumping of mature virions.o Both these drugs are active against influenza A as well as influenza B1 virus,o Oseltamivir is a prodrug and is used orally,o Zanamivir is used intranasally - can cause bronchospasm. 