drug and precursor laws by country or territory drug and precursor laws by country or territory the legal status of drugs and drug precursors varies substantially from country to country and is still changing in many of them. united nations classify drugs internationally, it affects all its member states. territories territory drug and precursor laws united nations incb – single convention on narcotic drugs, 1961 incb – convention on psychotropic substances, 1971 incb – united nations convention against illicit traffic in narcotic drugs and psychotropic substances, 1988 incb "green list" – list of psychotropic substances under international control incb "yellow list" – list of narcotic drugs under international control chemical weapons convention, 1997 un convention on drug precursor chemicals incb "red list" – list of chemicals frequently used in the illicit manufacture of narcotic drugs and psychotropic substances under international control countries country drug and precursor laws germany anlage i anlage ii anlage iii sweden narkotikastrafflagen läkemedelsverkets föreskrifter om förteckningar över narkotika lagen om förbud mot vissa hälsofarliga varor list of substances kontroll av narkotikaprekursorer (up to date list of laws) new zealand search engine philippines comprehensive dangerous drugs act of 2002 united kingdom medicines act 1968 misuse of drugs act 1971 misuse of drugs regulations 2001 drugs act 2005 psychoactive substances act 2016