I have had a sleep problem for what feels like forever, and have tried anything and everything...some with limited success, most failed miserably. I was given some of this as a Christmas gift, and more to use it up than anything, I gave it a try. I couldnt believe that I slept from 11.30 pm right round to 5 am....unheard of for me for so long! Since then, everytime I use it, I sleep...and not the restless, fitful sleep I usually have but proper SLEEP, and I wake feeling rested and ready to take on the day. I dont know how it works, nut for me, IT WORKS!