Benzethidine 
opioid 
10th ECDD (1960)  Critical review 
Benzobarbital 
sedative 
23rd ECDD (1987)  Critical review 
Benzodiazepines 
benzodiazepine 
30th ECDD (1998) – Prereview, 31st ECDD (1999) – Prereview 
Benzylone 
stimulant 
44th ECDD (2021)  Critical review 
Beta1Methyl3ethyl4phenyl4propionoxypiperidine 
opioid 
3rd ECDD (1952)  Critical review 
Betaacetylmethadol 
opioid 
4th ECDD (1954)  Critical review 
BetaEthylbetamethylglutarimide 
other 
7th ECDD (1957)  Critical review 
Betahydroxy3methylfentanyl 
opioid 
26th ECDD (1989)  Critical review 
Betahydroxyfentanyl 
opioid 
26th ECDD (1989)  Critical review 
Betamethadol 
opioid 
5th ECDD (1955)  Critical review 
Bezitramide 
opioid 
16th ECDD (1969)  Critical review 
Bromazolam 
benzodiazepine 
45th ECDD (2022)  Critical review, 46th ECDD (2023)  Critical review 
Bromisoval 
sedative 
25th ECDD (1989)  Critical review 
Brorphine 
opioid 
44th ECDD (2021)  Critical review 
Brotizolam 
benzodiazepine 
26th ECDD (1989)  Critical review, 27th ECDD (1991)  Critical review, 28th ECDD (1993)  Prereview, 29th ECDD (1995)  Critical review 
Buprenorphine 
opioid 
25th ECDD (1989)  Critical review, 32nd ECDD (2001) – Prereview, 33rd ECDD (2003)  Critical review, 34th ECDD (2006)  Critical review 
Butalbital 
sedative 
23rd ECDD (1987)  Critical review 
Butallylonal 
sedative 
23rd ECDD (1987)  Critical review 
Buthalital sodium 
sedative 
23rd ECDD (1987)  Critical review 
Butobarbital 
sedative 
23rd ECDD (1987)  Critical review 
Butonitazene 
opioid 
2023, 46th ECDD Critical Review

Butorphanol 
opioid 
25th ECDD (1989)  Critical review, 33rd ECDD (2003)  Prereview, 34th ECDD (2006)  Critical review 
Butyrfentanyl 
opioid 
38th ECDD (2016) Critical Review 