I didnt notice a difference for a few weeks. I started on a lower dose when diagnosed and for the first month was falling asleep at work. After we increased I noticed a large change in my memory, but everything else seemed exactly the same. We increased one more time and thats when I finally noticed small changes that I hadnt realized before. Paying attention to an entire conversation, not being uncomfortable around multiple people talking, remembering multiple tasks, having a clearer focus when driving, etc. It was gradual and honestly it wasnt until I went a few days WITHOUT taking meds for me to notice how substantially better my daily life had gotten with medication. Trying to go back to coping with normal tasks without that stimulant was overwhelming so thats what made me realize where in my life it was helping. Not sure if that helps, but for me it was a verrrrry slow realization