Gabapentin, naproxen sodium and amitriptyline are the cornerstone meds for me.

Gabapentin for the neuropathic pain, naproxen sodium for inflammation and general pain, and amitriptyline is an old school anti-depressant that also seems to help some off label for CRPS pain.

I have never seen a condition where the meds necessary to control pain are so very unique to the individual. Lots of "trial and error" is often necessary and encouraged.