"took this for nerve pain and it helped! except i would rather ache &amp; have nerve pain than deal with the side effects i experienced. i kept getting nightmares that were so horrific, i eventually started sleeping with the lights on &amp; thus not sleeping as good. within 6 months i gained 20 lbs without changing my eating habits nor physical activity. looking back, there was a short period of time when my vision was affected as i had trouble focusing. at the time, i just thought my contacts prescription was getting too strong for me. i decided to revisit the list of side effects and sure enough there they all were. i quit taking nortriptyline that day and eventually the nightmares, blurred vision, &amp; weight gain went away."