I do have the 50 MG tablets.
My Tramadol is not for my PN.
I take a small dosage of generic Neurontin for my PN.

My Tramadol was prescribed for osteoarthritis in my foot.

Oh yes it worked for that pain very nicely but it defiantly made me want to nap.
I loved it cuz the pain relief was so great.
But I sure could never take it and drive.
I started with half a 50MG tablet for a few days and once I decided I was not gonna be in trouble I went to the whole tablet.
But only one and at night before bed.
Slept wonderfully painlessly.

Upsetting side effects for me...
Slept like a log and when I woke with the need to go to the restroom I found both legs solid pins and needles. Apparently it make me sleep so soundly that I don't move at all and so my limbs fall asleep (normal "falling asleep", not from the PN)
I also find myself rather "groggy" the following morning.

So after the first couple weeks, when the foot arthritis flair up was under control, swelling and redness abated and I stopped taking the Tramadol.

But I still take half or even a whole one once in a blue moon to get some relief from the arthritis. More often I simply take Tylenol Arthritis.

I do not notice any diff in my PN with the Tramadol, but that is probably because my Neurontin does an acceptable enough job most of the time.