Zanamivir can be found under tradenames such as Relenza™, Verenza and Z-Flu DPI.
Zanamivir is used for patients 5 years and older. It is given as one 10 mg dose, twice a day for the treatment of influenza. In the prevention of influenza, zanamivir is given as one 10 mg dose, once a day for 10 days after contacting with an infected person or up the 28 days (during influenza epidemic). The most common side effect of Zanamivir is reported to be rash.