I haven't been taking this formula for an entire month, but I think I notice some improvement in my memory. It's not like I woke up one morning, and my memory was back to its 1990 level. But I was having unbelievable difficulty retrieving words I had used frequently and knew well. I had gotten to the point that I would stop trying because it just made me want to cry. But now, when I am searching my mind for a certain word it takes a few moments, but I usually do retrieve it. A vast improvement to me. And whereas I used to completely forget where I put things. I mean it was if it just had not happened. But now if I stop and clear my mind, more often than not I can remember where I put an item.