"i have recently had to stop using the fentanyl patches, after several years of good results. but my body finally said it had had enough. so, i tried kadian, which stopped working after a week or so. now i am on opana er, which seems to do a fair job, but it feels too much like demerol. i take 20mg twice a day, and was using 80mg twice of kadian, 100mg of fentanyl every 48 yours. i wish they would make fentanyl in a pill form. i have no &quot;woosy&quot; feeling with it. i have 5 ruptured discs in my lower back, as well as stenosis, etc. i have tried surgeries, stimulator, etc. "