I started taking it a few months ago. Great product initially felt a certain agitation because I took at the same time with Memory plus and I am a very active and agitated person. I decided to take one of them and it was great. Product in effect to improve focus. I study a lot and it helps me to improve my energies and focus. By containing ginko I felt an improvement in the abilities to remember things and also by the fact also of possessing cqo10, that already made the use previously. I recommend it also improved mood, energy and will to achieve things. I only take it in the morning for being a stronger product. My husband uses it and also felt many improvements in work income. Some side effects I felt when I stopped taking the product for a few days was sleep, too much sleep, and unwillingness to get up and do things. That depends on each person, but the brand is great always buy products from this brand and the site is super reliable.