The Single Convention on narcotic drugs of 1961 states that the "possession, use, trade in, distribution, import, export, manufacture and the production of drugs is exclusively limited to medical and scientific purposes".
La Convention unique sur les stupéfiants, de 1961, limite ". exclusivement aux fins médicales et scientifiques la production, la fabrication, l'exportation, l'importation, la distribution, le commerce, l'emploi et la détention des stupéfiants".