Generic Tamiflu is used to treat flu symptoms caused by influenza virus types A and B in patients who have had symptoms for less than 2 days. It may also be given to prevent influenza in people who may be exposed but do not yet have symptoms.

Generic Relenza is used to treat flu symptoms caused by influenza virus in patients who have had symptoms for less than 2 days. It may also be given to prevent influenza in people who may be exposed but do not yet have symptoms.

Treating certain types of chronic hepatitis B virus infection.

Famvir (Famciclovir) is an antiviral drug, used to treat the Herpes viruses, including herpes simplex 1 and 2 and varicella-zoster.

Treating hepatitis C infection in certain patients when used in combination with interferon.

Treating HIV infection when used along with other medicines.

Preventing and treating certain types of flu.

Treating HIV infection when used in combination with other medicines.

Acyclovir is an antiviral drug.