anxiety
"My doc started me on alprazolam about a year ago for insomnia.-, but it was anxiety that kept me awake. 

I take one or two 0.5 pills and I am able to fall asleep more easily. I also take one pill during the day if I feel edgy. I recognize early onset symptoms because I had panic attacks (untreated) for over 40 yrs. I used alcohol for years until I realized the damage it did to my body. I used pain pills for awhile, stopped and then was prescribed alprazolam."