I mean, that is what ritilin is. I get a 35mg extended release with an optional 5mg straight dose for breakthrough symptoms. At that level it takes a while to build up tolerance, month or two of everyday maximal use. As I will occasionally forget to take it, or just skip it on rest days , I almost never have any tolerance or other type issues. If I was going to school I would want a slightly higher dose but that is all well within regular guidelaines from the medical literature. Absolutely has been a life changer though. It is actuall gentler on the body than the ammount of caffine you'd have to take to get similar results