Real-world familiarity with US biosimilar regulatory guidelines and interchangeability state laws among pharmacists and physicians treating immunological disorders

Pharmacists reported higher rates of familiarity and training with biosimilars and recommendation of biosimilars to patients than physicians. A diverse sample of physicians and pharmacists expressed perceived barriers and strategies to improve biosimilars uptake, including educational programs and FDA guidance. Further research is needed to determine if providers' perceptions of biosimilars are associated with biosimilars uptake.