Strange how our bodies (minds?) work. I had pains for many years in my neck and back from an injury suffered in basic training. I progressed from Tylenol, to Tylenol # 1 (prescription free in Canada), then # 2, 3, 4. Only mild effect on the pain. Tried pure codeine, results even worse, they were totally useless, then finally Oxycocet (Oxycodone with Tylenol). And my neck and back kept hurting.
As I wrote, my doctor was reluctant to take things further, so I finally took myself off them in frustration. What's the use taking something that made doctors and pharmacists look in suspicion, if it didn't help!
Here is the kicker, and I swear it's the truth: My pain has lessened considerably since I stopped taking Oxycodone! I now only take some ordinary Tylenol once in a while but without really trusting them, only guided by the thought: the pain might possibly be worse without them!