The US Food and Drug Administration (FDA) issued an updated draft guidance on March 7 on the nonproprietary naming of biologics, titled Nonproprietary Naming of Biological Products: Update. This update is FDA’s second attempt at guidance concerning nonproprietary name suffixes for biologic products. It also highlights the perceived tension between FDA’s pharmacovigilance role and goal of increasing the availability of biosimilars. At least for this round, FDA’s interest in tracking pharmacovigilance data seems to have received priority.