Depends on the country what medication is allowed and considered safe. Who makes the guidelines, why are they the way they are, and who benefits from the guidelines as they are.
This reminds me of what I found out about the antidepressant I take. Edronax (reboxetine) is not approved in the US but it is here. Usually it is the other way around. There are a number of medications for ADHD (three that I know of) that are available in the US but are not approved for use here.
Yup. Just checked on Edronax, available in Belgium, but, a quick glance seemed to show that it is not available in the Netherlands.
We don't have the amount of ADHD meds they have in the USA either.