This week, United Health announced a proposal to drop Sanofi’s insulin Lantus and Amgen’s bone marrow stimulant Neupogen in favor of their biosimilars. AND THEN, the FDA approved Amgen’s biosimilar version of Humira. Good week for biosimilars, bad week for Lantus, and meh week for Amgen (especially since AbbVie is still suing for patent infringement). This is only the fourth biosimilar licensed by the FDA under the Biologics Price Competition and Innovation Act, but the true test will come if more payers, like United, drop the branded products completely. ICYMI: Biosimilar safety and interchangeability are still questioned by some.