I would question that there is a substantial difference. Amphetamine does not necessary make you "high", even without having ADHD. Only if you're not used to i

I would question that there is a substantial difference. Amphetamine does not necessary make you "high", even without having ADHD. Only if you're not used to it there is this "bouncing off the fucking walls" effect. But it goes away if you know this effect already. Than amphetamines can increase focus, and make you chill instead of hyper-active. That's why people take it to study for example actually. After a few days of continual use only the increased focus effect stays. But it doesn't have almost any effect on one's mood any more. Actually it can even cause a significant drop in mood. Still it's addictive. Like tee or coffee, which won't make you feel full of energy any more when your addicted, it just becomes a necessity to "function". You can show all physical symptoms of "being sky-high on speed" like pupil dilation and such, but just go to sleep for example. I don't question that the effects of stimulants like amphetamines may help overcome some medical conditions, only that I don't think that the effects are much different in otherwise healthy individuals.