sedation
"I actually was taking this through high school because of depression and severe insomnia and it worked wonders.  As I got older though, I stopped taking it and recently the sleep problems have started back up again. My doctor gave me 100 mg tabs of trazadone (the generic) and I had really bad headaches when I woke up in the mornings.  I think it was because when I was in High School, I was taking between 25-50mg.  Bought a pill splitter and I split the 100mg tablets into quarters and take 1-2 of them to equal the approximate dose of 25-50mg I was taking.  So far so good and I haven't had the headaches so far...been doing this for a couple days so far."