A neurologist can prescribe the pain cream. I can’t remember if you have a neurologist, but if you do, you should be able to call and ask for it. Be aware it is a compounded cream, from a compounding pharmacy, and usually isn’t covered by insurance. I pay $118 for two 8 oz pump bottles. Right now using it on my lower back/hip area allows me to do some yard work without stabbing muscular pain. There are many different “recipes”, but they are all similar.

The pain cream I use is compounded by a Pharmacist. My doctor calls it in the amounts I wrote out. My compounding pharmacy printed it out for me. I will tell you this we are stationed in Germany and the Germans have used alpha lipoic acid IV for years with a lot of success. The pills do not work as well as the IV. I have worked my way up to 400 mgs (the amount is 600-1800 I just have so many drug allergies that I did not know if I would be allergic to it) have the pills. I ordered it through my pharmacist. I could not find it over the counter. I figured if I ordered it through the pharmacist they would know what I needed. So much junk on neuropathy.
https://www.mountsinai.org/health-library/supplement/alpha-lipoic-acid#:~:text=Several%20studies%20suggest%20alpha%2Dlipoic,and%20legs%20from%20nerve%20damage.