Yeah dood I am prescribed to those. I took one 36mg today and mixed it with a 54mg concerta. So 90mg in all. My god dood the comedowns r SO bad. Maybe they doubled up and I'll be on it for 24 hours instead of 12. Damnit all I felt freezing today and now I feel overheating. I'm not hungry but I forced myself to eat and drink a little. Never doing it again although I aced my schoolwork for today.