This section of the Toolkit introduces the Single Convention on Narcotic Drugs of 1961,
the Convention on Psychotropic Substances of 1971 and the United Nations Convention against Illicit Traffic in Narcotic Drugs
and Psychotropic Substances of 1988, as the legal basis for a harmonized and cooperative international framework to prevent
drug abuse and address the various aspects of illicit traffic. It also discusses how psychoactive substances, including those
identified as NPS, may be placed under international control.
A psychoactive substance under international control is a substance that is listed in the
schedules of either the Single Convention on Narcotic Drugs of 1961 or the Convention on Psychotropic Substances of 1971.
Chemicals and precursors used in the manufacture of psychoactive substances are controlled under the Convention against Illicit
Traffic in Narcotic Drugs and Psychotropic Substances of 1988.
The schedules of the 1961 and 1971 international drug control treaties were established
to distinguish applicable control measures aimed at ensuring the availability of those substances for medical and scientific
purposes, while preventing their diversion into illicit channels.