Converting to Durogesic DTrans is generally a straightforward business but as it is something you may not do every day the material in this section should be helpful in reducing confusion and clarifying any concerns you may have.
ORAL Morphine / Fentanyl Conversion Chart
4 hourly oral Morphine dose or breakthrough dose (mg.) |
24 hour oral Morphine dose (mg.) |
Fentanyl patch |
Durogesic DTrans patch size (mcg) |
< 15 |
< 90 |
25 |
25 |
15 - 25 |
90 - 134 |
37 |
25 + 12 |
25 - 30 |
135 - 189 |
50 |
50 |
30 - 40 |
190 - 224 |
62 |
50 + 12 |
40 - 50 |
225 - 314 |
75 |
75 |
55 - 65 |
315 - 404 |
100 |
100 |
70 - 80 |
405 - 494 |
125 |
125 |
85 - 95 |
495 - 584 |
150 |
150 |
100 - 110 |
585 - 674 |
175 |
175 |
115 - 125 |
675 - 764 |
200 |
200 |
130 - 140 |
765 - 854 |
225 |
225 |
145 - 155 |
855 - 944 |
250 |
250 |
160 - 170 |
945 - 1034 |
275 |
275 |
175 - 185 |
1035 - 1124 |
300 |
300 |
*** Please note 4 hourly oral morphine dose is rounded to nearest 5 mg practical dose