I too have just been prescribed nortryptiline. I took the first one, then googled the side effects. One of them is irregular heart beat. Since I was already going through a bad patch of arrhythmia I decided to hold off until the arrhythmia was more settled. I did have a great night’s sleep and no burning, but was a bit groggy the next day. So I waited 6 days to take the second tablet. Again, a good night’s sleep, no pain, but groggy. The next night I took one more. I had runs of thumping atypical arrhythmia, a fitful sleep (but no burning), and the next day I felt so horrible, groggy and tired, that I could hardly walk and talk at the same time, being terribly out of breath. I had to have an out-to-it nap in the middle of the day. So I think that’s the end of nortryptiline for me. Two days after taking it I swam 2kms and walked 2kms back to my car and felt find, so it’s unusual for me to be so wiped out that I can barely walk and talk… I’ve been experimenting with Kava powder the last 3 nights. Seems to help me get to sleep and reduces the tingling and burning. No ‘hangover’ the next day. However, it is not recommended for longterm use and can cause liver damage, so it might be short experiment. Gabapentin was a no-go for me too - too much brain-fog! I don’t know what the answer is…