insomnia
"i have primary insomnia i have taken ambien, ativan, xanax, mirt, they all had their  issues, ambien does not give one rem sleep, ativan or xanax i got used to real fast, mirtzapine i gained 4 pounds in 4 weeks and will.still wake up 5-6 × a night. finally i have been put on 50 mg.  started  working like a charm on day 2. very happy."