I use an over-the-counter sleep aid, Unisom tablets (doxylamine succinate). It's just a drowsy-inducing antihistamine, but it stays in the body longer than the other approved medication (diphenhydramine), and my problem isn't getting to sleep, it's staying asleep. 1/2 tablet every night is enough to keep me sleeping through the night. The tablets are scored at the 1/2 point, so it's easy to break them in half.