Well, I have a few friends who went to the hassle of acquiring an unneeded prescription, and they just give it to me for free since their insurance covers it. I really could get a prescription of it, but then I'd have to go the trouble of doing those tests, paying money, and then having a surplus. So, when I do this, I can take as much as I want, and sell the rest. I mostly only take it when I'm extremely distracted or when I need energy.