Convention on Psychotropic Substances

The Convention on Psychotropic Substances is a 1971 United Nations treaty that established international controls on psychoactive medicines and substances, among them many psychedelics, psychostimulants, and sedatives. It sorts controlled substances into four schedules and obliges signatory countries to limit their manufacture, trade, and use. It is the international counterpart to national scheduling laws such as the United States Controlled Substances Act; DMT and 2C-B are among the substances it controls.

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