Take 5-30 mg of Dexedrine, you'll be focused, a bit euphoric, maybe some jaw tension and anorexia. You'll get a lot done. Mild crash? It's a risk.

Smoke a point of meth and you'll be taking apart your toaster in no time. That's 100mg for those of you who grew up on the right side of the tracks.

I'm diagnosed ADHD, by the way. I prefer modafinil over amphetamines, I find the high milder, the wakefulness promotion is a nice bonus, it lasts longer too.

But this is, to be frank, what we used to call an old wives' tale. There is no medical basis for saying that stimulants hit ADHD brains differently. It seems to be a combination of wishful thinking, and doctors choosing to not let the general public know that low doses of stimulants will improve their focus and executive function as well.

Honestly I think that's a pity. Stimulants are a useful adjunct for productive work, at a reasonable dose. America did just fine, for decades, with de-facto legal amphetamine, nor has criminalizing it done much of anything to blunt the epidemic of abuse.

The difference between ADHD and the elusive "normal brain" is that a lot of us need our meds to function. I've taken a few months off, even a few years at one point, and looking back it was a disaster. I still take weekends off whenever I can, and the lowest dose I think I can get away with.