N02AOpioids
Subgroups
- Natural opium alkaloidsN02AA
- Phenylpiperidine derivativesN02AB
- Diphenylpropylamine derivativesN02AC
- Benzomorphan derivativesN02AD
- Oripavine derivativesN02AE
- Morphinan derivativesN02AF
- Opioids in combination with antispasmodicsN02AG
- Opioids in combination with non-opioid analgesicsN02AJ
- Other opioidsN02AX