Role of Medicines in Swine Flu Treatment Antivirals for Swine Flu treatment including Oseltamivir, Zanamivir, and Peramivir inhibit viral neuraminidase i.e. a glycoprotein located on the surface of H1N1 virus which functions by destroying the receptor on infected cell for viral hemagglutinin, which minimizes the release of H1N1 virus from infected cells. This restricts the spread of virus to other body cells.