Or, more specifically, time-released Concerta. I happen to have a bunch of 18 mgs that were prescribed to me but I never used because I switched to a different brand, so I figure, what the hell. How much should a single person snort to feel something? I already know how to get around the layers of the pill and such, I just need to know how much is safe to ingest and how much is needed to feel the effects.
