insomnia
"My doctor prescribed me 10mg sonata for my insomnia. Sonata is great if you only want 3-4 hours of sleep on exam days because of its short duration and no drowsiness. However, if you want to get a full 7-8 hours of sleep it sucks  being woken up in the middle of the night every time (~2-4am), unable to fall back asleep. Have to take a second dose to fall back asleep but takes a white to kick in since you're not drowsy when you woke up and you're writing this review awake in bed waiting for sleepiness to come..."