"Speed" is what calms most of us down. People with ADHD can still be stimulated by speed but most are like me and have a gene hat causes stimulants (speed) to do the opposite and actually calm us down. And I mean really really calm us down depending on how high the dosage is.

Speed is prescribed to people with ADHD by a doctor or psychiatrist to help manage hyperactivity and increase focus and attention, irritability, etc.

I'll write more later cuz I'm on my coffee break at work.