Terrible. Was in bed until 4am before I went to sleep - then seemed to sleep the sleep of the dead for about 2 hours, judging from heart rate and perception (dropped to 52 for a bit, then 55-59 for 2 hours). Not nearly enough, couldn't lie still or get back to sleep so eventually forced myself to get up. Whatever this is, it's really something else. Just over one week since I stopped the amitriptyline.