Editing Interferon beta-1a (section)

====Betaferon (interferon beta-1b)====
Closely related to interferon beta-1a is [[interferon beta-1b]], which is also indicated for MS, but is formulated with a different dose and administered with a different frequency. Each drug has a different safety/efficacy profile.<ref>{{cite journal | vauthors = Nikfar S, Rahimi R, Abdollahi M | title = A meta-analysis of the efficacy and tolerability of interferon-β in multiple sclerosis, overall and by drug and disease type | journal = Clinical Therapeutics | volume = 32 | issue = 11 | pages = 1871–1888 | date = October 2010 | pmid = 21095482 | doi = 10.1016/j.clinthera.2010.10.006 }}</ref> Interferon beta-1b is marketed only by [[Bayer]] in the US as Betaseron, and outside the US as Betaferon.