https://medixway.com/adhd/adderall/

Adderall is a potent amphetamine, which is a type of stimulant that arouses the body’s central nervous system (CNS) into a more wakeful or active state.4 For those with ADHD, a condition with hyperactive-impulsive or inattentive symptoms, Adderall can have the opposite effects. That is, instead of increasingly stimulating patients, Adderall paradoxically allows people with ADHD to become more functional.