> Would one be able to tell a difference at a much higher dosage? I never dared risk much higher dosages, so I wouldn't know. > What about when compared to an

> Would one be able to tell a difference at a much higher dosage? I never dared risk much higher dosages, so I wouldn't know. > What about when compared to an equivalent dosage of another CNS like methylphenidate or cocaine? In my experience, one can definitely tell the difference between (meth)amphetamine and methylphenidate / cocaine, at any dose. They are by no means that different, though, and I wouldn't be surprised if a person with no previous exposure to either would struggle to do so. Other CNS stimulants, like nicotine and caffeine, are more obviously different. This is all purely anecdotal, though I have skimmed studies which also claimed as much, so those might be worth looking into.