"after years of not being able to fall asleep or stay asleep and after trying lunesta and ambien i was tired. sonata works great for me and i don&#039;t wake up groggy or hung over. i feel great for the first time in my life. i have fibromyalgia/chronic fatigue syndrome and it is essential to get sleep. i feel refreshed and ready to go in the mornings.....love it. thankful my doctor said to give it a try. hope this helps."