I took 10mg nortriptyline for awhile for pain management (spinal issues), and in the process of taking it I found that taking it did provide some relief for my PN numbness (toes), and I slept well too. However, the minor sedation effect upon waking was not working out, so I tapered off the nortriptyline. I tried Gapapentin once after my PN diagnosis but it did not relieve my PN numbness so I stopped taking it. A 500 mg acetaminophen tab at bedtime does help me sleep, as does wearing warm thick socks. So far, I've found no lasting relief for my PN numbness but I'm scheduled to see a new neurologist soon for a discussion, so my search continues.