"i normally take valarian root to sleep.  i ran out and i have heard a lot about melitonin otc.  not for me.  i took it about 2 1/2 hours ago and still wide awake.  i am glad it works for all of the ones i have read the review on but i almost feel like it is a caffiene high.  i don&#039;t drink caffiene.  i will go back to my valarian root tomorrow so i can sleep."