Does getting addicted/tolerant to one of them make you necessarily addicted/tolerant to others? I'm on bupropion to treat my ADD (primarily inattentive) symptoms, which is one. But so are cocaine, Adderall, and Ritalin. So if I get tolerant to bupropion, will that make me necessarily tolerant to Adderall and Ritalin? And then screw me over unless I get a modafinil prescription? And what of other drugs that increase dopamine, but by other methods?