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This application is a service of the Singapore Government.

Health Sciences Authority

Appendix A: Substances subject to import control

The appendix A consists of psychotropic substances and controlled drugs listed in the respective regulations under the Health Products Act and Misuse of Drugs Act.

Prior approval from HSA is required for each import of therapeutic products containing any substance listed in Appendix A.

The following substances and products or any stereoisomeric form, ester or ether, and salts of a substance specified below.

0-9 | A | B | C | D | E | F-K | L-M | N | O-P | R-Z


2-amino-1-(2,5-dimethoxy-4-methyl)phenylpropane 4-Cyano-2-dimethylamino-4, 4-diphenylbutane 4-Cyano-1-methyl-4-phenylpiperidine
3-Methyl fentanyl 1-Methyl-4-phenylpiperidine-4-carboxylic acid 2-Methyl-3-morpholino-1, 1-diphenylpropanecarboxylic acid
4-methylthioamphetamine 3-methylthiofentanyl 4-Phenylpiperidine-4-carboxylic acid ethyl ester



Acetorphine Alphacetylmethadol Alprazolam
Acetyldihydrocodeine Alphameprodine Amfepramone
Acetylfentanyl (also known as desmethyl fentanyl) Alphamethadol Aminorex
Acetylmethadol Alpha-Methyl fentanyl Acetanilide Amobarbital
Alfentanil Alpha-Methyl fentanyl Amphetamine
Allobarbital Alpha-Methylthiofentanyl Anileridine
Allylprodine Alphaprodine  


Barbital Beta-hydroxyfentanyl Bromazepam
Benzethidine Beta-Hydroxy-3-Methyl Fentanyl Brotizolam
Benzphetamine Betameprodine Bufotenine
Benzyl fentanyl Betamethadol Buprenorphine
Benzylmorphine(3-benzyl-morphine). Betaprodine Butalbital
Betacetylmethadol Bezitramide Butobarbital


Camazepam Clobazam Cloxazolam
Carfentanil Clonazepam Cocaine
Cathine Clonitazene Codeine
Cathinone Clorazepate Codoxime
Chlordiazepoxide Clotiazepam Cyclobarbital


Delorazepam Diazepam Dimepheptanol
Desomorphine Diethylthiambutene Dimethylthiambutene
Dexamphetamine Difenoxin Dioxaphetyl butyrate
Dextromoramide Dihydrocodeine Diphenoxylate
Dextropropoxyphene Dihydroetorphine Dipipanone
Diamorphine Dihydromorphine Drotebanol
Diampromide Dimenoxadole  


Ecgonine, and any derivative of ecgonine
which is convertible to ecgonine or to cocaine
Ethylloflazepate Etilamfetamine
Estazolam Ethylmethylthiambutene Etonitazene
Ethchlorvynol Ethylmorphine (3-etdylmorphine) Etorphine
Ethinamate Ethylphenidate Etoxeridine


Fencamfamin Furethidine Hydromorphone
Fenetylline Gamma hydroxybutyric acid Hydroxypethidine
Fenproporex Glutethimide Isomethadone
Fentanyl Halazepam Ketamine
Fludiazepam Haloxazolam Ketazolam
Flunitrazepam Hydrocodone Ketobemidone
Flurazepam Hydromorphinol  


Lefetamine Medicinal opium Methyldihydromorphine (6-methyldihydromorphine)
Levomethorphan Mefenorex Methylphenidate
Levomoramide Mephentermine Methylphenobarbital
Levophenacylmorphan Meprobamate Methyprylon
Levorphanol Mesocarb Metopon
Lofentanil Metazocine Midazolam
Loprazolam. Methadone Monoacetylmorphine
Lorazepam Methadyl acetate Morpheridine
Lormetazepam Methamphetamine (also known as Methylamphetamine) Morphine
Mazindol Methaqualone Morphine methobromide, morphine N-oxide and other pentavalent nitrogen morphine derivatives
Mecloqualone Methyldesorphine Myrophine


Nicocodine Noracymethadol Norlevorphanol
Nicodicodine(6-nicotinoyldidro-codeine) Norbuprenorphine Normethadone
Nicomorphine Norcodeine Normorphine
Nimetazepam Nordazepam Norpipanone
Nitrazepam Norketamine and its dehydro derivatives  


Oxazepam Phenadoxone Pholcodine
Oxazolam Phenampromide Piminodine
Oxycodone Phenazocine Pinazepam
Oxymorphone Phencyclidine Pipradrol
Para-fluorofentanyl Phendimetrazine Piritramide
Parahexyl (3-hexyl-1-hydroxy-7, 8, 9, 10-tetrahydro-6, 6, 9-trimethyl 6h-dibenzo [b, d] pyran) Phenmetrazine Prazepam
Pemoline Phenobarbital Proheptazine
Pentazocine Phenomorphan Properidine
Pentobarbital Phenoperidine Propiram
Pethidine Phentermine  


Racemethorphan Tapentadol Tilidine
Racemoramide Temazepam Triazolam
Racemorphan Tetrazepam Trimeperidine
Remifentanil Thebacon Vinylbital
Secbutabarbital Thebaine Zipeprol
Secobarbital Thiafentanyl Zolpidem
Sufentanil Thiofentanyl