insomnia
"I have trouble staying asleep. I wake every night anywhere from between 12:00 a.m. to 3:00 a.m. and am up for the rest of the night. This medicine helped me sleep, but also made me very depressed.  It made me very angry and upset most of the time. I took this for about 3 months, until I got to the point that there was something very wrong with me and it was the medicine.  "