insomnia
"Absolutely horrible.  Took one at 2 o'clock in the morning from my mother to help me sleep. It knocked me out but I remember 15 minutes after I took it I started to feel very odd in my eyes would not relax. I woke up in the morning with extremely red bloodshot eyes and a extremely horrible painful headache  and I felt weak and dizzy. I have been laying in bed all day and my headache is still not gone and it is 10:39 PM. I do not recommend this medication."