I can second that: limited experience only.
I used oxycodone/oxycontin for a few days after appendix surgery. Didn’t like the effect, made me more drowsy than I felt comfortable with. Also it suppressed the breathing reflex, which caused my blood oxygen level to drop and I was unable to sleep well with it, because I gasped for air every half minute, which woke me up often – very annoying. I stopped as soon as the first sharp pain started to diminish, so my experience is limited. No one told me of the severe addiction risk of this stuff, so I am glad I didn’t need it for long. No withdrawal effects (besides more pain, which I found preferable at that time).
On another occasion I used Tramadol, which did not suppress my breathing and worked well enough to get me through the first two weeks of two broken ribs (combined with paracetamol and diclofenac). When I started to reduce the dose slowly after two weeks, the side effect was I couldn’t hold my food after diner. Noticing that, I immediately stopped cold turkey and next day fortunately the problem was gone. In future situations I certainly would try Tramadol first and if possible not use something stronger like oxycodone.
I used diclofenac for several years continuously in a low dose for its anti-inflammatory effect (but it is a mild painkiller as well that reduced my joint-pains). It allowed me to reduce the need for IV antibiotics without having exacerbations for 5 years. Recently I had an exacerbation nevertheless and the antibiotic worked so well on the infection that the inflammation also almost disappeared. So for the time being on that course I have stopped the diclofenac. I might start it again if it allows me to reach another equilibrium with less antibiotics in the future. It’s a balancing act.
I think using strong pain medication (opioids) for a couple of weeks can be a good thing, but after that the risks of dependence or even addiction are becoming considerable. Fortunately, after most successful surgeries the need for such strong painkillers should be gone by that time too. I think the risk for dependence or even addiction increases if the medication, besides killing the pain, makes you feel “good” (euphoric) as well. For me this was not the case fortunately, on the contrary: I disliked the effect on my mind, which made it easier to stop as soon as the pain allowed for that.
My cf team was not involved in the appendix situation, although my pulmonologist was informed and consulted about this on my request. I think it’s unfortunate that I was prescribed oxycodone nevertheless after surgery – they should have known better.
With the broken ribs, I went to the ER to check for a possible pneumothorax, which was not the case or only very minor. I was seen by one of the cf-pulmonologists there, so this might be the reason they prescribed a painkiller that did not suppress breathing, which was a wise thing. The other reason: me specifically asking for it.
As far I know, the cf team does not have a pain specialist. The hospital probably does, but I guess the patient must ask for his/her involvement specifically. Something to remember for the future.