Opioid conversion

PANG have anĀ Opioid dose calculator which you can use to work out the equivalent dose of an alternative opioid (e.g. if switching from oral Morphine to a Fentanyl patch or Oxycodone).

Common reasons for switching:

  • Current opioid not helping the pain
  • Current opioid causing toxic symptoms (hallucinations, twitching, sedation)
  • Need an alternative route eg a patch because of vomiting or poor swallow

ALWAYS check a conversion dose with a colleague, especially if unfamiliar with opioids

This Opioid dose conversion chart is from Royal United Hospitals Bath:

mceu-9396821611698919002233.png

West Midlands CARES site has in depth advice about switching opioids and caveats to looks out for including renal function, age, dose, weight etc.

Recommended Resources

PANG - Opioid Dose Calculator

Published 9th November 2023

Royal United Hospitals Bath - Opioid Conversion Chart

Published 1st January 2019

West midlands palliative care - Relative doses of opioids

Published 1st August 2018

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