Relative potencies of morphine via various routes
The relative potency of morphine when given by various routes is given below:
Route | Potency relative to oral morphine |
oral morphine | 1 |
rectal morphine | 1 |
subcutaneous morphine | 2 |
intravenous morphine | 3 |
subcutaneous diamorphine | 3 |
i.e. 3mg oral morphine is equivalent to 1mg of subcutaneous diamorphine
Check summary of product characteristics before prescribing any drugs mentioned.
Reference:
- West Midlands Palliative Care Physicians (2003). Palliative care - guidelines for the use of drugs in symptom control.
Related pages
Create an account to add page annotations
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page