Anatomical Therapeutic Chemical • N02AA • Natural opium alkaloids

A Alimentary tract and metabolism

B Blood and blood forming organs

C Cardiovascular system

D Dermatologicals

G Genito urinary system and sex hormones

H Systemic hormonal preparations, excluding sex hormones and insulins

J Antiinfectives for systemic use

L Antineoplastic and immunomodulating agents

M Musculo-skeletal system

N Nervous system

N01 Anesthetics

N02 Analgesics

N02A Opioids

N02AA Natural opium alkaloids

N02AA01 morphine

N02AA05 oxycodone

N02AA08 dihydrocodeine

N02AA55 oxycodone + naloxone

N02AA59 combinations

N02AA59 ibuprofen + codeine

N02AA59 paracetamol + codeine

N02AB Phenylpiperidine derivatives

N02AC Diphenylpropylamine derivatives

N02AD Benzomorphan derivatives

N02AE Oripavine derivatives

N02AF Morphinan derivatives

N02AG Opioids in combination with antispasmodics

N02AJ Opioids in combination with non-opioid analgesics

N02AX Other opioids

N02B Other analgesics and antipyretics

N02C Antimigraine preparations

N03 Antiepileptics

N04 Anti-parkinson drugs

N05 Psycholeptics

N06 Psychoanaleptics

N07 Other nervous system drugs

P Antiparasitic products, insecticides and repellents

R Respiratory system

S Sensory organs

V Various