Amitriptyline
"I have Lupus and am in pain and tired most of the day. It didn't matter how much sleep I got (which was interrupted most nights). I just started Elavil and found that it helped me to finally be able to sleep through the night. I felt a lot better during the day. I will note that it should be taken about 1/2 hour before bedtime because it will make you drowsy.  It has also helped my mood and pain during the day."