My understanding is the amph. works the same in everyone - minus the edge cases.
The main difference is that the magnitude is greater in people with ADHD than those without. A reduction in hyperactivity, for example, is not really apparent in people that are not overtly hyperactive to begin with.
Beside, ADHD is kind of a nebulous label for a lot of symptoms. Having ADHD vs. not having ADHD is not exactly binary.
That is not true. Vyvanse, caffeine, etc., helps my brain calm down and focus. I don’t get hyper. In fact, if I have too much caffeine, I start yawning.
My wife, who does not have ADHD (at all), gets hyper from stimulants.
That’s the difference.
“Taking ‘Smart Drugs’ Like Adderall Without ADHD Actually Decreases Productivity”
https://www.forbes.com/sites/darreonnadavis/2023/06/14/takin...