I currently take 20 mg of dexamphetamine daily for ADD. Recently I have noticed an impairment in cognitive abilities. I am able to focus on whatever I need to focus on, but I feel as if im unable to think fast. I believe its brain fog. I sometimes cant think of the word I need, cannot remember what I was about to do, and my mental proccesses feel slower although it is not severe enough as to impact my daily life. This is my first post so please correct me if needed, any help would be appreciated thanks!