•Only has to be injected every 14 days
•Can be kept at room temperature for up to 30 days, which can be convenient if you're traveling
•Might be difficult for some people to administer correctly
•Can potentially cause a lot of serious side effects like liver damage and mental health problems
•It's not completely known if Plegridy (peginterferon beta-1a) is safe in pregnant or breastfeeding women