I get some of the best sleep with it. I feel the effects withing 5-10 minutes and fall asleep quick, which had been a problem for me during the start of this year. Even now that I can fall asleep without issues, I still don't sleep quite as well without it. Add the fact that I feel refreshed the next day, and you've got yourself a terrific product.
As far as the other claims, such as growth hormone release, I can honestly say that I have leaned out considerably. I can't scientifically say its the Somnidren, but my diet and workout routine hasn't changed.