I've been on Cymbalta for about a half year now and it did help stop the pain in my legs, but I'm also taking Nurontin and Lyrica for the same problem. It has helped somewhat with the depression I've been falling into but it could be better. I believe Cymbalta helps generate more seratonin to help with pain.
I was on lryica first, didn't help me much with the nerve pain. Surgeon switched me to Neuronton or the generic Gabapenten. It helped some so he added the Cymbalta. With the Gabapenten and the Cymbalta I noticed an improvement. I have also started PT which is helping. I didn't notice any side effects. When I have taken the pain med and muscle relaxer with the other two I have crashed pretty hard. Like sleeping all night and half of the next day but that was earlier in my recovery. Hope this helps, Usta