I took up to 50mg of nortriptyline. I didn't think it was doing much for my burning and pain but as I decrease the dose I realize it was doing more than I thought. I was told to go off because my vision was blurry. I am currently on 20mg and I noticed quite a bit of difference between 30 and 20mg. I did not help with my sleep at all. However, when I added gabapentin, I did start to sleep a bit better. Still not great sleep, I wake up about 6-10 times a night but I am able to get back to sleep. Before, I would wake up 2 hours after going to bed then I would be up for the rest of the night.