There are plenty of drugs that will mess you up pretty bad *if you don’t have the condition they’re intended to treat*. That’s, frankly, a really ignorant “test” you’ve devised.
There are plenty of studies that have shown Adderall, Ritalin, et al to be quite effective in children who actually have ADHD. I had it, and for me all it did was make it far easier to stay focused on my work. I did give one to a friend who did not have ADHD, who (unfortunately) abused things like that, and he had a “very smooth” amphetamine-like experience.
It is quite effective in turning them into zombies.