Trazodone
"My sleep doctor prescribed this for me (I have sleep apnea) because I kept waking up at the slightest noise or movement from my husband. I take 100 mg before going to sleep and I can say it has changed my life for the better.  I can sleep for a solid 7 to 8 hours with little drowsiness in the morning.  In addition, it has helped my depression symptoms, although it may also be the better quality of sleep I get."