The cream, well actually it is a paste, was prescribed by an orthodontist that specializes in face pain. It was made at a compounding pharmacy here in Victoria, Canada. It is Capsaicin .025%, Lidocaine 2%, amytriptyline 15%, gabapentin 5%. I was told that the capsaicin, which causes the heat sensation, messes with the pain messages that the overactive nerve sends to the brain. For me the heat feels calming and then after about 5 minutes the numbness from the lidocaine kicks in and gives more relief. The small amounts of amytryp and gaba are probably useful when using regularly but i feel that it would still work without them… so maybe you can get the compound without a prescription if it was just the capsaicin and the lidocaine??
i put a small dab (size of a popcorn kernel) on a q tip and place it above my last upper molar. Then i let it sit for about 10 minutes until it peaks hotness and then i wipe it out. Sometimes at night i fall asleep with it in and it stays for hours but then the gums can get a little irritated … but so what when it gives so much relief. Oh and i have my family physician prescribe the cream for me now so i don’t have to keep going back to the specialist. Good luck i hope you can give it a try. 