Biosimilars In February 2020, the US Food and Drug Administration announced its plans to enhance the “Lists of Licensed Biological Products with Reference Product Exclusivity and Biosimilarity or Interchangeability Evaluations,” a database of all FDA-licensed biological products. The database is colloquially referred to as the “Purple Book.” The agency seeks to improve the accessibility of information related to biological products, including interchangeable products and biosimilars, through expansion and digitization of the Purple Book, notes Dr Nicola Davies in her exclusive article for The Pharma Letter. 12 June 2020