I have taken a lot of supplements in the past and I am weaning the number I take down.  I started taking Zero-N and noticed a big difference in my memory and my focus.  I seem to be a lot more clear and can pay attention to what I am working on a lot more than I had in the past.  Even things around my house, I can find them and remember what I was going in the next room to get.  I am going to keep taking this one and it is not one that I will be cutting out of my life!!