The annual meeting of the National Pharmacopoeia Authorities of European Pharmacopoeia member states took place in Oslo, Norway, on 15 to 16 April 2013. The meeting, a unique platform for the open and informal exchange of information and for discussion between the secretariats of national pharmacopoeia authorities and the European Pharmacopoeia, was hosted by the Norwegian Medicines Agency, Statens legemiddelverk. Twenty-three of the thirty-seven member states participated in this event.