I took it for quite some time, the only reason I stopped is because I was driving a long distance to work and back home and I felt too sleepy.
When did you start taking it?
I would just suggest to keep in touch with your doctor if you feel like there are unwanted side effects, and try not to take other people's experiences to heart as we are all different!
I have been taking nortriptyline for about 4 years. I take 50 mg a day. I have had migraine/cluster headaches about 12 years. I am a 33 year old male. I had no depression, just headaches. Once I started taking the medicine my migraines started to lesson greatly. I also found that caffiene from drinks or Excederin may have helped triggered the severe migraine headaches. I had mild "normal" headaches from caffiene and still do if I start drinking caffiene again, but these are completely different from my severe headaches. I personally never noticed any side effects from the medicine. Only once I forgot to take with me out of town and I felt extremely anxious after 4 days and almost couldn't take it. I think it took a couple months until it started working, the freqency and severity slowly started to decline. Imitrex shots is the only thing I have ever taken which would take my severe headaches away. I have now not taken Imitrex over a year.