| Opioids (N02A) |
|---|
Opiate derivatives |
Whole Opium Preparations |
|
| Natural Opiates |
|
| Semisynthetics |
|
| Opiate metabolites |
|
|
|---|
| Morphinans | |
|---|
| Benzomorphans | |
|---|
| 4-Phenylpiperidines | |
|---|
Open Chain Opioids |
| Amidones |
|
| Methadols |
|
| Moramides |
|
| Thiambutenes |
|
| Phenalkoxams |
|
| Ampromides |
|
| Others |
|
|
|---|
| Anilidopiperidines | |
|---|
Oripavine derivatives | |
|---|
| Phenazepines | |
|---|
| Pirinitramides | |
|---|
| Benzimidazoles | |
|---|
| Indoles | |
|---|
| Diphenylmethylpiperazines | |
|---|
| Opioid Peptides | |
|---|
| Others | |
|---|
| Narcotic Antagonists | |
|---|