FYI -I was prescribed Pregabalin ( Brand name Lyrica) when I first developed non-diabetic PN and found I had to slowly increase dosage to 50mg a.m. and 75 mg p.m. as per Doc's advice.
The result was that there was not total relief but helped some.
The downside was the side effects in my case Nausea, swollen feet and Jerking/shaking as I was about to go to sleep, very unpleasant.
I decided to put up with the intermittent pain rather than the side effects from Pregabalin.
I down-dosed under Doc's recommended timing etc and unfortunately the side effect from down-dosing was a very uncomfortable attack of Diarrhoea and dehydration, ending up in hospital for a night on a saline drip.
I suggest you do a bit of research before trying Pregabalin as it seems to be able to apparently treat a variety of medical problems.

I take 600 mg of gabapentin 4 times a day and pregabalin 100 mg morning and night!
I have had peripheral neuropathy for quite a number of years. It is related to my 3 spinal surgeries and Degenerative Disc Disease. JJ