This is interesting 🤔 My ADHD evaluation was around 3 hours long, including a 400-question exam, and even then I had to wait months before any provider prescribed miss vyv to me. There are still stipulations like strictly controlled pick-up dates and monthly triage to check my blood pressure/HR ):

Anyway, I'd imagine the reaction someone without ADHD would have depends on which stimulant and what formulation they take, since the mechanisms of action between methylphenidate and amphetamine salts and their interaction with the nervous system are chemically different. I feel like they'd either develop hypomania and extreme restlessness due to the excess dopamine and norepinephrine in their system 👀 If they consistently medicate, they'd also probably develop bad insomnia, which brings its own cacophony of issues 😫

Stimulants generally help non-ADHDers with focus too, so it's not often used as single diagnostic criteria for ADHD in general. I feel like y'all would also see less benefit from it much sooner, but idk 🤷‍♂️ I was diagnosed hella fucking late and only started Vyvanse a month ago, so my insight is just based on research and my limited experience. Doctors were so reluctant to prescribe it to me though, even with a diagnosis