[hikz]

  I tried the stuff as a kid and in undergrad 

How often and when did you take it? Did you take it during holidays when you didn't have to study?

[eli_gottlieb]

I tended to use it only on workdays, and to take something like 10mg once per day. I think I had slow-release at one point.

But again: I had a prescription, from a doctor, due to a diagnosis. The experience remained quite unpleasant, and I don't recommend it to anyone.