depression
"I have been taking Seroquel at a low dose (50mg) for about 10 years; for insomnia and depression (to augment another mood stabilizer).  It generally works very well.  I fall asleep almost immediately and have uninterrupted sleep.  I do have some grogginess in the morning but it generally wears off within 30-60 minutes.   The only other potential side effect I've experienced is elevated cholesterol, but I do not know if the seroquel is causing it; my internist believes it may be hereditary.  

It's available as a generic and is very inexpensive with my insurance. 

Overall I find it's a good med."