I'm on a combination of Neurontin and Elavil (Nortriptilylene's sister drug, for which i did try for a few weeks).
I've been on both for several years now, at varying dosages. Currently at 1200 mg of Neurontin and 40 mg of Elavil.
I was off Elavil for about a month because I wondered if it was really helping or not-- and found out it definitely was.
I think the combination is good for the allodynia (nerve pain) and stinging parts of RSD/CRPS, but doesn't do anything for the stabbing and throbbing. However, that was to be expected-- as both are geared towards Nerve pain.
Side effect wise, I experience some fatigue and sleepiness from both the meds. I also experience some cognitive effects from the Neurontin; and when I was first started on Elavil, I gained about 7 lbs.

L2L