Fact sheet about the four drugs - amantadine, rimantadine, zanamivir, and oseltamivir - available to treat or prevent influenza. From the National Institute of Allergy and Infectious Diseases.
The agents, zanamivir (Relenza) and GS 4104, show great promise for preventing influenza infections and for reducing the duration and severity of symptoms in people who begin treatment after they start to feel sick.