Fillable Printable Opioid Conversion Guide Chart - Western Australia
Fillable Printable Opioid Conversion Guide Chart - Western Australia
Opioid Conversion Guide Chart - Western Australia
OPIOID CONVERSION GUIDE
These conversions are a guide only.
Patients may vary in their response to different opioids. After changing
opioid, close assessment should follow and the dose altered as necessary.
Equianalgesic d oses of oral opioids
Oral opioid
Conversion f a c t or
(opioid dose x or ÷ by factor
= morphine dose)
Practical
equianalgesic
dose
morphine
1 0 m g
hydromorphone
x 5
2 mg
oxycodone
x 1.5
5-7.5 mg*
codeine
÷ 8
75-90 mg*
tapentadol
÷ 3
5 0 m g*
tramadol
÷ 5
50 m g
* dose guided by strength of medication available
Methadone conversions are complicated and prescribing should be restricted to medical
specialists with experience of methadone prescribing for pai n management.
Subcutaneous route conversions
Opioid
Oral dose
Equianalgesic
subcutcutaneous
dose
Conversion factor
(oral dose ÷ by factor
= subcut dose)
morphine
30 mg
10 mg
÷ 3
hydromorphone
6 mg
2 mg
÷ 3
Transdermal preparation conversions
Opioid
Patch strength
Equianalge s ic oral
morphine dose
buprenorphine
5 microgram/hr
12 mg/24 hrs
fentanyl
12 microgram/hr
30-45 mg/24 hrs
Sublingual preparation conversions
Opioid
Dose
Equianalge s ic oral morphine
dose for pain
buprenorphine tablet
200 microgram
8-16 mg
fentanyl lozenge
200 microgram
no direct conversion
initiate 200 microgram lozenge
and titrate to effect
