I have been taking this product for several years because getting a good night's sleep is important to me. I take this product at 9:00 and I am ready for bed at 10:00. Sometimes I don't get to bed for another 15-30 minutes but I fall asleep as soon as my head hits the pillow. I have a ResMed sleep tracker (the same one Dr. Oz uses) and my score is usually very high... in the 90's and often 95 and as high as 98 out of 100. A bad score for me is 88, which is still pretty good. I wake up feeling well rested and I have a lot of energy throughout the day. I also rarely get sick and part of that may be due to getting enough sleep.