This is a supplement that does different things but probably the most valuable property for me is that after my sleep patterns being basically ruined by prescription drugs in the past, it's the only thing which actually allows me to fall asleep at night and feel reasonably rested the next morning. I have tried many other supplements for this but this seems to be the only one that really works consistently and dependably and I don't seem to build up any tolerance to it. If I don't take a couple of capsules of this before retiring, my mind works overtime, worries and anxiety keep me awake, will be lying in bed looking at my phone and just not be able to turn off the "monkey mind" and get to sleep.... but maybe 30-40 minutes after taking a couple of capsules of this which I personally like to take with some yogurt although I'm not sure that's a necessity, I have no choice but to fall asleep. Doesn't matter if I'm looking at my phone or not. Will just put it down because I will get tired and want to go to sleep. Period. Been a lifesaver. It allows me to experience the REM cycle and actually dream which otherwise would not be happening and that's an important cycle in our sleep and without it I don't think we feel rested. I know I don't. Of the different supplements I take this is one that I make sure I NEVER run out of. *After writing all this I also forgot something that's pretty important. This particular supplement has other effects the brain besides helping with sleep (and anxiety)... in terms of learning and memory. I play the guitar a little bit and in the past, before I started taking the supplement, I would try to learn a piece of music on the guitar and I would forget almost as soon as I had learned part of it. Almost immediately. Definitely by the next day. After taking this supplement, not even for that long, I started being able to remember what I had been practicing and retained it. That it's another thing that totally sold me on this supplement. Like I said, I will never stop taking it.