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5th January 2024
Opioid Dose Equivalence
If patients become unable to swallow, oral preparations of morphine can be switched to the subcutaneous route and are often given through a syringe driver.
| From | To | Calculation |
|---|---|---|
| Oral codeine | Oral morphine | Divide by 10 |
| Oral tramadol | Oral morphine | Divide by 10 |
| Oral morphine | Subcutaneous morphine | Divide by 2 |
| Oral morphine | Intravenous or subcutaneous diamorphine | Divide by 3 |
| Oral morphine | Oral oxycodone | Divide by 2 |
| Oral oxycodone | Subcutaneous oxycodone | Divide by 2 |
Source: adapted from Scottish Palliative Care Guidelines. Choosing and Changing Opioids [Internet]. [cited 2023 Jul 16]. Available from: https://www.palliativecareguidelines.scot.nhs.uk/guidelines/pain/choosing-and-changing-opioids.aspx
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