My almost 12 year old son was diagnosed with ADHD in kindergarten and was taking Concerta up until about 6 months ago. We took him off 36mg because it stopped working and because of the side effect of not eating and his weight too low, the dose could not be upped. He's taken Intuniv 1mg for three nights now and he has been complaining of being very dizzy and tired, (almost Zombie like.) Will this go away?