That’s a tough one, that’s a really tough one, especially as I’m seeing my 5 year old niece and seeing myself in her... in her inability to remain focused and motivated. It’s tough because even I am sometimes biased against running to medication as sloppy fixes when root causes of ailments and a full safety profile of drugs isn’t 100% clear.
But with the information and experience I have, I think if you get tested by a professional psychologist and he okays it, I’d be comfortable with kids as young as 5 getting medicated.