<unk> , sold under the brand name Plegridy, is medication used to treat multiple sclerosis. The most common side effects include headache, muscle pain, joint pain, influenza (flu)-like symptoms, pyrexia (fever), chills, asthenia (weakness), and erythema (reddening of the skin), pain or pruritus (itching) at the injection site.<unk>  was approved for medical use in the United States and in the European Union in 2014.
Peginterferon beta-1a
Peginterferon alfa-2a
Peginterferon alfa-2b
Ropeginterferon alfa-2b
Pegylated interferon
Interferon beta-1b
Interferon beta-1a
Ribavirin