Hi. Sorry you're having such a hard time.
What kind of doctor diagnosed and is medicating your son? in my opinion you need to get him totally evaluated to see if more is going on than ADHD. in my opinion it sounds excessive for just ADHD.If so, that would explain why t he medications don't work. Can you tell us more about your son, starting as an infant? Did he have chaotic early years? Is Dad around? Any history of mental illness on either side of his DNA tree?