I also had tried Neurontin & Gabapentin that did not relieve my pain. Tried amitriptyline but made me too nauseated. Started Cymbalta 3 weeks ago. The nausea and tiredness was the worst the first week or two, but its starting to get better. My doctor started me on a lower dose, and then after the side effects get a bit more tolerable, will build up in dose in a month.

Good luck!