Peginterferon-alfa Peginterferon-alfa may refer to: Peginterferon alfa-2a, an antiviral drug used in treatment for hepatitis C and hepatitis B Peginterferon alfa-2b, a treatment for hepatitis C See also[edit] Interferon Index of chemical compounds with the same nameThis set index article lists chemical compounds articles associated with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article. Portal: medicine