Hi there Jeff and welcome to NeuroTalk.

I feel for you with this condition as I've had it myself.
I have MS, and TN is quite a common symptom for us to get.

From my own experience, narcotics are not much help at all with nerve pain, but rather the anti-epileptics or drugs like Neurontin seem to be the way to go.

I see you've already tried Tegretol. I use a similar one called Epilum, but as I don't live in the USA, I'm not sure if it's available to you.

Here's the link to out TN Forum, incase you've not already found it for yourself: http://neurotalk.psychcentral.com/forum26.html