I take a low low doseage of Neurontin for my PN, and have for many many years. The low low doseage works "enough" for me. Sure I am aware of a bit of PN pain/symptoms but it's not drastic with my low doseage.
Can't do without it entirely because of the PN pain.

Last year I was prescribed Tramadol 50 mg for newly appearing Foot Arthritis pain.
Diff kind of pain so diff pain masker.
Yes, they can be taken together.

AT first the Tramadol did make my legs go completely to sleep during the night. VERY surprising and disconcerting situation that brought back horrid memories of when my PN began, so I stopped Tramadol after the monster foot arthritis pain settled down.

But the foot arthritis has become a major continueing pain problem so now I take just ½ of one 50mg Tramadol before bed and it does cut the foot arthritis pain quite a bit, but just ½ does not get rid of all of the arthritis pain. (I also take 200mg Neurontin before bed).

My thinking is that perhaps this Tramadol for arthritis pain needs to be "gotten used to" by my system. Hopefully that is what I'm doing by taking ½ a pill. I'm having no problem with that dosage at all so I'm considering starting a whole pill per night very soon.

To the person taking 4 Tramadol a day.. be careful with that!
My mother did that for many many years.
The problem is it definatly took care of her pain and she was unaware of new additional painful problems in the same areas. I mean she knew she had more pains, but chocked it all up to the same problem (it wasn't) and just took her 4 tramadol to make it be quiet.

Pain is symptom and notice to the brain that something is wrong.
A new or addition pain needs investigated.

I've promised myself NOT to dose myself so full of pain maskers that I don't pay attenion to new pains. Even of the new pain is in the same area as my PN or my arthritis.
Tramadol (fpr arthritis) does not quiet my PN pain at all and Neurontin (for PN) does not quiet my arthritis pain at all... Each masker works on a diff pain.
So I can tell the diff between my PN pain and my arthritis pain. I want to continue knowing the diff and I want to be able to be aware if something new raises it's ugly head.

By the way Mother no longer takes any Tramadol at all.
She is now bedriden and her old pain problem is gone since she rarely moves or uses the areas she took that pain masker for.