<unk>  is an alfa<unk>  that is FDA approved for the treatment of chronic hepatitis C (CHC) and chronic hepatitis B (CHB). There is a Black Box Warning for this drug as shown here.  Common adverse reactions include fatigue/asthenia, pyrexia, myalgia and headache.
Pegylated interferon alfa-2a
Pegylated interferon alfa-2b
Pegylated interferon alpha
Pegylated interferon-alpha-2a
Interferon alfa-2b
Interferon alfa-2a
Peginterferon Beta-1a
Ribavirin