Nortriptyline
"Day 1:  Took my first dose of 25mg last night about 2200ish.  I was still wide awake at 0100.  This morning I awoke feeling angry and irritated....reading many of the comments here this seems to be an issue with this medication.  I have had 2 failed  back surgeries and am trying to avoid the fusion every Dr has said I need.  The failed surgeries have made me extremely fearful.  I have  never ever in my life experienced anything so painful in my life.  In 2000 a microdiskectomy and laminectomy led complications. A meningocele  the size of a football on my lumbar region.  Spinal fluid coming out my nose and ears.  My head was going to explode.  Now I am willing to try anything to avoid surgery.  I'll try this for a few weeks... we will see"