I haven't heard anything about Vyvanse for kids, but my PNP thinks highly of it for adults. I believe it is a stimulant released more slowly into the body than some of the others, because it must be metabolized first to the active form. I don't think it gives that jolt that some of the other stimulants do and that is good because it is not so prone to abuse. I think you just take it once a day. I don't know about using it in kids. What does your son's doctor say?