magnesium really does help with sleep (for me, anyways). I used to just take magnesium, but now I have cal/mag wafers that I nibble on after dinner. A couple of hours later, I start getting really tired and find I sleep very well. Note on magnesium: there are different types, I believe the citrate kind can upset your stomach. My first go at cal/mag liquid left my insides liquid!!

I also like to have sensory deprivation when I sleep, so I'll have an ear plug (yes, one, as I sleep on my side so just in the ear that isn't against the pillow), and if I happen to wake up in the middle of the night, I often put eye shades on, too. Makes me fall back asleep faster.