In general which is stronger fent patches or oxycodone? The reason why i ask is my doc wrote me 5 100mg. patches last month to try out. i found the patch worked good for about 36hrs. after that i felt nothing. the patch was suppose to be changed every 72 hrs. my regular meds he gives me is 4 30mg of oxycodone a day, with 4 10 mg percocet a day for break through.

According to one source, the 100 mcg patch (definitely not 100mg or you'd be very dead indeed!) is used when the total 24 hour morphine requirement is between 315mg - 404mg.

Converting morphine to oxycodone leads to 209mg - 269mg.

Your total oxycodone intake over 24 hours (if all breakthrough meds are taken) is 160mg.

Now converting this back to morphine gives 240mg. This falls under the range of a 100mcg fentanyl patch, so you have in theory been given more transdermal opioid than your oral opioid. But you have to take into account so many other variables that it is only theory, based on average results from trials. The table suggests that even when you have taken all your main pain meds and breakthrough meds, the 75 mcg patch would have been indicated.

The conversion table I used was:

24 hour morphine/mg : Duragesic/mcg/hour

60 to 134 ---------- 25
135 to 224 --------- 50
225 to 314 --------- 75
315 to 404 --------- 100
405 to 494 --------- 125
495 to 584 --------- 150
585 to 674 --------- 175
675 to 764 --------- 200
765 to 854 --------- 225
855 to 944 --------- 250
945 to 1034 -------- 275
1035 to 1124 ------- 300

There may be other conversion tables, for example one hospital may have a different protocol to another, and a different one to the manufacturer. Also, they change over the years as more feedback is filtered from the patients to the hospitals and then to the manufacturers.

Hope this helps, but if I have explained it poorly please do squawk, and I'll try to make it better.

However, it may be simply a case of you telling your doc that you preferred the oral meds.

xxx off topic deleted xxx

still learning, guess i appologize the post so off topic that it had to be deleted, all i was trying to do was thank someone. and just so this one will not be deleted i will post about fentanyl vs oxycodone..... Fentanyl is an extremley potent analgesic it is synthetic but the same can be said for oxycodone. It all comes down to the dosage taken and amount released for bioavailability. Both require extreme caution as they can cause respiratory depression and death.