The Danish National Board of Health engages in international collaboration on the drugs problem. The collaboration is extensive because the illegal trade in drugs is international, and because the fight against drugs problems is based on United Nations conventions. Collaboration takes place at several levels:
- The United Nations (UN) and its various offices, especially the United Nations Office on Drugs and Crime (UNODC) and the World Health Organization (WHO) pool the efforts of countries worldwide.
- The European Union (EU) has a special action plan on drugs and has set up a monitoring centre in Lisbon (EMCDDA).
- The Council of Europe where the member states work together on drugs in the Pompidou Group.
- The Nordic countries which collaborate on alcohol and drug research through the Nordic Centre for Welfare and Social Issues in Finland (NVC).