In my opinion it's normal for some kids or people to be distracted easily or have more energy than others. They require more attention. Also a child's brain is not fully developed. Why do we expect all kids to be great at focusing? Do you think the focus is worth the reported short and long-term side effects[0]?
[0] https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=aff...