The European Medicines Agency (EMA) has published the sixth revision of Appendix 1 (“Acceptable intakes (AIs) established for N-nitrosamines”) of the EMA questions and answers for marketing authorisation holders/applicants on the CHMP opinion for the Article 5(3) of Regulation (EC) No 726/2004 referral on nitrosamine impurities in human medicinal products (EMA/409815/2020 Rev.21).