Comment by somebodynew

I meant "stimulant" in the context of traditional dopamine reuptake inhibitors and releasing agents like amphetamine and ritalin which are almost incomparable to less controlled or uncontrolled compounds like modafinil, ephedrine, and caffeine. Even a high dose of caffeine will not produce effects anything like amphetamine. The mechanism of action between amphetamine and caffeine are fundamentally different rather than being a matter of strength. It's unfortunate and misleading that the word stimulant is used for both categories.