Medications that may be used to treat nerve pain include Amitripytline and Nortriptyline. 

Amitriptyline has many uses. It is used to treat certain kinds of nerve pain (such as neuropathic pain, peripheral neuropathy, postherpetic neuralgia) and prevent migraine headaches. Amitriptyline belongs to a group of medicines called tricyclic antidepressants. In the past, these medicines were commonly used for depression, but these days doctors usually prescribe newer classes of antidepressants to treat depression. 

Nortriptyline is used to treat many types of persistent pain. It is especially good for nerve pain such as burning, shooting or stabbing pain, and for pain that keeps you awake at night. Nortriptyline works by increasing the amount of specific nerve transmitters in the nervous system, reducing pain messages arriving in the brain. Once you start nortriptyline it usually takes a week or so for pain to begin to wear off.