Clonidine
"My son used various stimulants for yrs for ADHD and ODD. Now 10, newly diagnosed with Sensory Processing Disorder (SPD) and still struggling because of impulsiveness & high metabolism, the docs added non-stimulants.  Intuniv dropped his bp way too low. Clonidine IR worked GREAT the 1st 2 days, then okay. Changed to Kapvay for long-acting effects, but we stopped because of awful insomnia for 2 weeks. I rated Clonidine IR as an 8 because when we went back to Clonidine IR, his insomnia stopped and it decreased his impulsiveness.  It just stinks that he has to take it over and over again because it's short acting."