I have heard the R form is better and have been taking ALA of all forms for almost 8 years. It has helped me. I take mine at night to help minimize symptoms while sleeping. Capsaicin neuropathy creams have helped but can’t recall the brand names. There are lidocaine creams and Rollins that can help temporarily, too. I like the Salonpas brand. I also take Acetyl L Carnitine supplements which are known to help neuropathy, too.

Here are the creams I just ordered on Amazon.
https://a.co/d/fcZrbNH
Here is the brand of combined alpha Lipoic acid and Acetyl l carnitine supplements I also recently bought.
https://a.co/d/6bk913I