Confronted with the continued and rapid emergence of new psychoactive substances, countries in the region have placed additional substances under temporary listing and/or extended the scope of drug control to defined groups of substances. For instance, the Republic of Korea announced the temporary control of 10 new psychoactive substances (6 synthetic cannabinoids, 2 phen-ethylamines and 2 other miscellaneous substances) for three years in December 2014, which brought the number of new psychoactive substances currently under temporary control to 86. Under that country’s Act on the Control of Narcotics, the possession, management, trade, assistance in the trade, or the giving or receiving of materials that contain a temporary scheduled substance are prohibited.