Papaverine 
other 
6th ECDD (1956)  Critical review 
Parafluorobutyrylfentanyl 
opioid 
41st ECDD (2018)  Critical review 
Parafluorofentanyl 
opioid 
26th ECDD (1989)  Critical review 
parafluorofuranyl fentanyl 


Paramethoxybutyrylfentanyl 
opioid 
41st ECDD (2018)  Critical review 
ParaMethoxymethylamphetamine 
stimulant 
37th ECDD (2015)  Critical review 
ParaMethyl4methylaminorex (4,4′DMAR) 
stimulant 
37th ECDD (2015)  Critical review 
Paraldehyde 
sedative 
25th ECDD (1989)  Critical review 
Pemoline 
stimulant 
22nd ECDD (1985)  Critical review, 25th ECDD (1989)  Critical review 
Pentazocine 
opioid 
15th ECDD (1966)  Critical review, 16th ECDD (1969)  Critical review, 17th ECDD (1970)  Critical review, 25th ECDD (1989)  Critical review, 32nd ECDD (2001) Prereview 
Pentedrone 
stimulant 
38th ECDD (2016) Critical Review 
PEPAP 
opioid 
24th ECDD (1988)  Critical review 
Phenallymal 
sedative 
23rd ECDD (1987)  Critical review 
Phenampromide 
opioid 
11th ECDD (1961)  Critical review 
Phenazepam 
benzodiazepine 
37th ECDD (2015)  Critical review 
Phenazocine 
opioid 
10th ECDD (1960)  Critical review 
Phenibut 
sedative 
44th ECDD (2021) – Prereview 
Phenmetrazine 
stimulant 
17th ECDD (1970)  Critical review 
Phenoperidine 
opioid 
11th ECDD (1961)  Critical review 
Piminodine 
opioid 
10th ECDD (1960)  Critical review 
Piritramide 
opioid 
14th ECDD (1965)  Critical review 
Poppy Straw 
opioid 
32nd ECDD (2001) – Prereview 
Prazitone 
sedative 
23rd ECDD (1987)  Critical review 
Pregabalin 
other 
39th ECDD (2017) – Prereview , 41st ECDD (2018)  Critical review 
Probarbital sodium 
sedative 
23rd ECDD (1987)  Critical review 
Propallylonal 
sedative 
23rd ECDD (1987)  Critical review 
Propiram 
opioid 
18th ECDD (1970)  Critical review 
Propoxyphene 
opioid 
7th ECDD (1957)  Critical review 
Propylhexedrine 
stimulant 
22nd ECDD (1985)  Critical review, 25th ECDD (1989)  Critical review, 27th ECDD (1991)  Critical review 
Protonitazene 
opioid 
45th ECDD (2022)  Critical review 
Proxibarbal 
sedative 
23rd ECDD (1987)  Critical review 
Pyrovalerone 
stimulant 
22nd ECDD (1985)  Critical review, 25th ECDD (1989)  Critical review 