Hi, vitamin B6 and B12 are good for neuropathic pain.
But usually drugs like gabapentin, carbamazepine, amitrypline etc are prescribed for neuralgias.
Dr. Jacob Teitelbaum has written good information about treating neuropathy.
Effective Treatment for Neuropathic (Nerve) Pain
Book Notes for "Pain Free 1-2-3"
Chapter 4: Focusing on Nerve Pain
I hope you'll find something to help.