I tried gabapentin, didn't work but made me feel a bit weird, am now on extremely high doses of pregabalin which is similar stuff but works using a different mechanism I believe. Zombie drug is right. I am on Fentanyl patches too which don't seem to work but then you get the problems of severe addiction, plus dihydrocodeine as and when. Oddly the best thing of all is paracetamol, but it only lasts for two hours or so.
If you told me that you were on gabapentin then I must have forgotten. I can certainly understand and am thinking about you. My hands are very good now compared to what they were. It's mainly my legs and face. Mrs has arthritis in her hands and takes codeine for them.