It contains Lidocaine Donuel. I think that's a derivative of cocaine, but I may be wrong.
Glad you're getting some relief from your pain.

If it's phantom nerve pain, Amitriptyline is good. It's an old-fashioned anti-depressant, but for some reason has a blocking effect on severe nerve pain. I eventually had to have it for agonising post-herpetic neuralgia. After getting shingles, I was left in awful torment, like being burned with a flame-thrower. But after two weeks on Amitriptyline, it had gone. It does dope one up a bit though.

Topical Capsaicin (from fiery chillies) is supposed to be good, but I didn't try that. My husband was disappointed, he would have loved smearing me with some of his Fiery Horror sauce!