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| Active substance | Equianalgesic dose (mg) | |
|---|---|---|
| Intramuscular | Oral | |
| Morphine | 10 | 30 (repeat dose) |
| 60 (single dose or intermittent dose) | ||
| Hydromorphone | 1.5 | 7.5 |
| Methadone | 10 | 20 |
| Oxycodone | 15 | 30 |
| Levorphanol | 2 | 4 |
| Oxymorphone | 1 | 10 (rectal) |
| Heroin | 5 | 60 |
| Meperidine | 75 | - |
| Codeine | 130 | 200 |
