i have add and adderall doesn't have the same "tweaker" effects on me. I don't get an elevated heart beat, i don't feel "cracked out", Actually it is more of a downer for me. It helps me be not so scatter brained, and keeps me from getting distracted by hotties walking by in the shopping center while im trying to train. I have never noticed any effects, positive or negative, on my stamina strength or endurance, but ive been taking it daily for several years. If you do not have add, the effects are completely different, and you get more of an amphetamine high from it.
no. don't generalize the effects. you are one person of millions who has taken the drug. you have a tolerance, plain and simple. responding differently to the drug is hardly a barometer for who does/doesn't have ADD/ADHD, as is whether or not it makes you 'high'.
i also guarangoddamntee you that your RHR and BP have increased substantially compared to if you weren't on stimulants. that 'downer' effect you're talking about has to do with your increase in focus. you feel more 'normal' yeah? that's because we have a dopamine/seratonin deficiency, and amphetamines dump a LOT of dopamine. that's why the effects are so similar to cocaine. ditto with methylphenidate.
hell, having ADHD in general means your brain is chemically so far out of whack from 'normal' you don't even have basis for comparison. that's why most of us present with bipolar or MDD.
plus, let's not forget that ADHD and Asperger's/HFA are both spectrum disorders, and present so closely to one another that it does get fuzzy in differentiating one from another.
point being, you're not a fucking doctor, don't generalize pharmacological interactions in other people based on your opinion.
interestingly, i found desoxyn (methamphetamine hcl) less 'tweaky' than similar doses of dexy, and desoxyn is pharma-grade, 99.99% eat-your-heart-out-walter-white pure. then again, it's a lot more enantiomerically pure than your street-grade meth, and isn't intended for blatant abuse.
this is really interesting if it's not over your head, and by that i mean the chemistry. i've never heard anybody outside of a lab coat use the word 'concomitantly'.