Metabolism plays a big role in determining the effective dose.
There are people who can take what are considered high therapeutic doses and feel very little effects because of the way their body metabolizes the chemical, which of course has nothing to do with whether they have ADHD or not.
There are people who can take what are considered high therapeutic doses and feel very little effects because of the way their body metabolizes the chemical, which of course has nothing to do with whether they have ADHD or not.