Strong Opioid Conversion Guide
From WardWiki - Foundation Doctor Helper
|MST||MXL||Oxycontin||IV/SC Morphine||SC Diamorphine||Fentanyl patch|
|30mg BD||60mg OD||10/20mg BD||30mg/24hrs||20mg/24hrs||25mcg/72hrs|
|60mg BD||120mg OD||30mg BD||60mg/24hrs||40mg/24hrs||25mcg/72hrs|
|90mg BD||180mg OD||40/50mg BD||90mg/24hrs||60mg/24hrs||50mcg/72hrs|
|120mg BD||240mg OD||60mg BD||120mg/24hrs||80mg/24hrs||75mcg/72hrs|
|150mg BD||300mg OD||70/80mg BD||150mg/24hrs||100mg/24hrs||75mcg/72hrs|
|180mg BD||360mg OD||90mg BD||180mg/24hrs||120mg/24hrs||100mcg/72hrs|
|210mg BD||420mg OD||100/110mg BD||210mg/24hrs||140mg/24hrs||125mcg/72hrs|
|240mg BD||480mg OD||120mg BD||240mg/24hrs||160mg/24hrs||125mcg/72hrs|
|Oramorph||Sevredol||Oxynorm||SC Diamorphine||SC Morphine|
Above conversions are intended as a guide only. For further advice contact your local pharmacist or Palliative Care team.
Always prescribe a laxative when prescribing any opioid. Antiemetics may also be necessary when opioids are first used or when the dose is significantly increased.
Pleas note that Morphine is the strong opioid of choice. Oxycodone is approximately twice as strong as Morphine. Divide the total 24 hour dose of oral Morphine by 3 when converting to SC Diamorphine.