5 European countries, 22 non-European countries, the Taiwan Food and Drug Administration (TFDA) of the Ministry of Health and Welfare and the World Health Organization (WHO) are observers.
Membership enables states to participate in European Pharmacopoeia Commission sessions. Within these sessions, each state is represented by their national delegation consisting of not more than 3 members. On all technical matters delegations can cast a vote.
For all non-technical matters, the EU votes in place of its member states' delegations. Each member state can also propose national experts in each group of experts or working party.
Observership allows states to:
- participate in the scientific work of the European Pharmacopoeia Commission;
- benefit from the European experience in this area;
- gain access to the work on the quality control of medicines and the methods of analysis used.