I am a self professed "bio-hacker" and have tried quite a range of products in the nootropic field. I am happy to report that Qualia Sleep is, by far, the best and most noticeably effective Sleep formula I have ever tried. Qualia Sleep is not a sleep aid, but rather, does its magic to the brain while you are sleeping. When you wake up, you feel refreshed, and well rested, like you woke up in the middle of a vacation. Highly recommended!