The international precursors control system

The international precursor control system is grounded in article 12 of the United Nations Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances of 1988 (1988 Convention).

Under the treaty, the International Narcotics Control Board (INCB) has a responsibility to monitor and promote measures taken by Governments to prevent the diversion of substances frequently used in illicit drug manufacture and to assess such substances to determine whether there is a need for changes in the scope of control of Tables I and II of the 1988 Convention.

INCB supports Governments’ efforts worldwide in the areas of international legitimate trade monitoring, precursor-related investigations and real-time intelligence-sharing on precursor incidents.


Information about drug precursors and the international precursors control system is available from the following:

See also: Trends in Precursors trade and trafficking