insomnia
"This drug is scary!!! The 20mg dose puts me on the threshold of sleep, without allowing me to actually fall asleep. I accidentally thought the maximum dose was 40mg so I took two 20mg pills. It really did make me fall asleep, but you can forget about trying to function at all the following day. I am quite desperate for sleep, so now I take 35mg when I have absolutely nothing going on the next day. I am retired and can stay at home without having to drive anywhere. The half-life of this drug is 12 hours!!! That means if you take a 20mg pill, your still going to have 10mg in your system 12 hours later. I can see why people fall asleep driving to work. Ambien on the other hand has a half-life of only of about 2.5 hours. DANGEROUS drug!!!"