Multilingual Dictionaries

The UNODC multilingual dictionaries provide a range of information in the six official UN languages on the narcotic drugs, psychotropic substances and precursors under international control as defined by the Single Convention on Narcotic Drugs, 1961, as amended by the 1972 Protocol, the Convention on Psychotropic Substances, 1971, and the Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances, 1988.

Addendum and Supplements to the Multilingual Dictionary

An addendum and supplements to the Multilingual Dictionaries on Narcotic Drugs and Psychotropic Substances under International Control were prepared following (re)scheduling decisions of the Commission on Narcotic Drugs in the years 2015-2020.