Equivalence tables used in calculation of DDD and MED
| Morphine mg/24 hours | ||||||
| 10 | 30 | 60 | 120 | 180 | 240 | |
| Oxycodone mg/24 hours | – | 20* | 40 | 80 | 120 | 160 |
| Hydromorphone mg/24 hours | – | 4 | 8 | 16 | 24 | 32 |
| Methadone mg/24 hours | – | 10 | 20 | 40 | 60 | 80 |
| Fentanyl ug/hour | – | – | 12 | 25 | – | 50 |
| Buprenorphine ug/hour | – | 10 | 20 | 40 | 52.2 | 70 |
| Codeine mg/24 hours | 100 | 240 | – | – | – | – |
| Dihydrocodeine mg/24 hours | 100 | 240 | – | – | – | – |
| Tramadol mg/24 hours | 67 | 200 | 400 | – | – | – |
| Tapentadol mg/24 hours | 25–50 | 75–150 | 150–300 | 300–600† | – | – |
*Conversion used in USA, Canada and Australia.
†The maximum recommended daily dose of Tapentadol prolonged release is 500 mg.
DDD, defined daily dose; MED, morphine equivalent dose.