Ritalin, obviously. ADHD isn't "too much energy", it's a neurological condition that, to a first approximation, can be defined as "the cluster of problems that respond well to treatment with stimulant medication".
I do feel bad for kids whose symptoms were ignored or mitigated by interventions as described, and therefore were not diagnosed, only to discover at age 30 or 50 that the reason they've struggled so much through life is because they have an executive function disorder, the methods for effectively managing it have existed for decades, and they could've made use of them if only people didn't dismiss them in childhood as "rowdy kids" in need of more exercise.
I do feel bad for kids whose symptoms were ignored or mitigated by interventions as described, and therefore were not diagnosed, only to discover at age 30 or 50 that the reason they've struggled so much through life is because they have an executive function disorder, the methods for effectively managing it have existed for decades, and they could've made use of them if only people didn't dismiss them in childhood as "rowdy kids" in need of more exercise.