I used to use amitriptyline - 50 mgs. And it worked great for nerve pain, but did NOT touch spasms. And It would knock me out normally, but not if I was having insomnia. Go figure.
I do not at this time have any pain meds rx'd by any of my docs - gee, thanks guys!

But I will say tequilla helps the back spasms - just a margie or two and I feel much better. Hey, you do what ya gotta do...
Good luck, Legz.