Why not ask for genetic testing for adhd drug efficacy? Some people have enzymes/genetic markers that show how that individual responds to adhd, antidepressant and pain medication to name a few. For example I was on concerta but needed an ever increasing dose to be helpful and come to find out that I have some genetic factor that makes me respond better to the adderal family. So switched to Adderall 30 XR and it works so much better! I also had to switch antidepressants for the same reason. it was night and day!