I've been taking this for a little over a week now, and I really think it's been amazing for my focus, relaxation, and productivity. I have ADD and used to take a plethora of amphetamines just so I could get work done. I decided to go off them and now I'm not taking anything and trying my best to cope. Theanine pills have helped a lot so far. They're a compound almost exclusively found in green tea that aids focus and relaxation, but it doesn't make me hyper/scattered like coffee often can.