insomnia
"I have taken Ambien (10mg) on several occasions for short periods of time and it worked just fine (knocked me out in 20min and gave me 5 to 6 hours of sleep). But, my doctor recently added Ambien CR to my nightly cocktail and it has not worked like the doctor or the website said it would. I have been taking it for a week. I expected it to knock me out and keep me asleep. I have done everything like I have been told to do and have been taking it before bed and all it has been doing is taking 3 to 4 hours to knock me out and makes me totally loopy in the morning. The effect is basically lengthened and delayed. I am hoping to switch back to original Ambien  formula when I see the doctor next month!"