Namenda for Pain Management

1

Has anyone been prescribed Namenda for TN pain? I have a Titration Pak sitting on my night stand but have not made the final decision. I hate the idea of yet another medication to make me unproductive and still be in pain. My doctor suggested adding 20 mg of Namenda each day. This would be in addition to 600 mg of Lyrica, 100 mg of Nortriptyline and 6-8 10-325 Percocet each day. I also take other medications for other issues. I have had so many bad experiences with medications in the past two years for TN. If you have tried this regime, whether it worked well or not, I would appreciate any feedback you can offer. Thank you. - Richard