<unk>  <unk>  is a class of medication that includes three different drugs as of 2012: *<unk> -alpha-2a *<unk> -alpha-2b *<unk> -beta-1a In these formulations, Polyethylene glycol (PEG) is added to make interferon last longer in the body. They are used to treat both hepatitis B, hepatitis C and multiple sclerosis.<unk>  is contraindicated in patients with hyperbilirubinaemia.
Pegylated interferon
Ribavirin
Peginterferon alfa-2a
Peginterferon alfa-2b
Taribavirin
Ropeginterferon alfa-2b
Peginterferon beta-1a
Interferon