What is the best non-prescription medication for insomnia?!

What is the best non-prescription medication for insomnia?

I've been taking generic Benadryl, but it seems to extend drowsiness even after I've slept at least 8 hours. I want something that won't make me feel groggy the next day.

3 weeks ago
This has just started over the summer, and it's driving me crazy.

Insomnia (sleeplessness) is due to stress,
dietary and medical problems. By making
small lifestyle changes like having a fixed
daily routine, relaxing and eating properly,
insomnia can be cured. I found the information
at http://www.nosleep.in/insomniacause.html...