Betaseron (interferon beta-1b) is a prescription drug used to treat certain types of multiple sclerosis (MS) and clinically isolated syndrome (CIS) in adults. The drug is given as an injection under ...

Betaseron (interferon beta-1b) is a prescription drug that treats certain types of multiple sclerosis (MS) and clinically isolated syndrome in adults. It’s given as an injection under your skin.

Betaseron (interferon beta-1b) is a brand-name drug that’s prescribed for certain forms of multiple sclerosis (MS) in adults. Betaseron comes as an injection that’s typically taken every other day.