My wife has had chronic pancreatitis for ~20 years now.
Initially, she was on immediate release opioids like vicodin. Those, in my opinion, are not very good for chronic pain as they do not adequately manage continuous persistent pain. They are good for short term or breakthrough pain. But even then, they tend to wear off before you are supposed to take the next one. This, in my mind, is more likely to lead to abuse than the extended relief medications.
While on vicodin, she would end up in the hospital a couple times a year.
Seeing the the Vicodin was ineffective, her doctor put her on Fentanyl patches. Those worked great. One caveat of patches, however, is that they have a ramp up and ramp down period. The patches are designed to last three days. Her doctor had her put a new patch on the third day to overlap with the previous one so as one was ramping down the next was ramping up. the only problem with the patches (other than having spots on her back from the glue) was that if she forgot to put one on it took a while for the medication to get in her system. It's not very flexible.
When her doctor moved to another area, her new doctor wasn't a fan of the patches, basically because it's hard to maintain and manage medication levels with them. So he switcher her to Morphine ER. She was on that for ten years without modifying the dose. The morphine eliminated the hospital visits completely and the only side effect was constipation. There was no drowsiness, euphoria or anything else like that. Basically, she could lead a normal life.
The worst part of morphine is that some people in the medical field treat you ...unprofessionally.
That, and it is a hassle to fill the prescription. Can't fill it early, but if you realize on friday afternoon that you will be out on sunday, you're screwed. (When this happened, we reduced dose to spread it out to get through.) Later, we found that if she missed a dose it wasn't that bad.
She's been off of it for about a year. Why? Because accidentally violated her pain contract when she went to the dentist. She had an infected tooth and the dentist called in a prescription. I went to pick up what we expected to be an antibiotic only to find that it was Vicodin. It didn't occur to me when I picked it up, but we got a call a couple weeks later that because of that they were taking her off morphine. Withdrawal wasn't really that bad.
Now she's on gabapentin, for which she says the withdrawal is a lot worse.
So why am I laying all this out? Because in all this fear of abuse what is being forgotten is that opioids allow a lot of people to live normal lives.
In many ways the paranoia about abuse and the measures for prevention, in my opinion, lead to abuse. Prescribing inadequate dosage leads to abuse. (Adequate dosage does not lead to a desire for more. Desperation for pain relief does.) Treating patients like criminals (Drug tests, assuming that patients are drug seekers, etc.) leads to abuse. Pain contracts that punish patients by withholding healthcare...lead to abuse.
For those who suffer from chronic pain, opioids are a miracle. Patients should not be forced to jump through hoops like criminals on probation for their healthcare. So find a solution that doesn't do that.