All four of my kids would say, “They couldn’t tell a difference.” The funny thing was their teachers could and their grades improved. It does take some time and isn’t something that is fixed within a few days or a week. You mention your daughter couldn’t quit talking after taking medication. My daughter would talk non-stop until she took her medication after that she was quiet. Her grades went from C/F’s to A’s. She is in second grade and has made the A honor roll three times now. She has been star student and her teacher has said nothing but good things. She tested at 4th grading reading.