Wouldnt taking anything on an empty stomach just increase the speed of absorption and thus a more rapid onset? Rather than a potentiating of the chemical itself as the OP is suggesting?
I took 5 ritain once, only felt like a piss week version of speed, but long long time ago and I dont remember what size/mg they were. Felt gud drinking thou.
I still wonder how a stim helps keeps hyper kids on track, if anything when im on stims I get really figitey n cant sit still
^ I used to thrash the rits and honestly imho ritalin>dexamphetamine. I do love my meth but I would probably love donkey shit if it twirled up like good meth.
I figure since ADD is a concentration issue it makes sense that stimulants such as methylphenidate and dexamphetamine help out with it since they improve focus. While it is certainly true that hyperactivity is also a symptom of ADD to the point you got ADHD (adding an extra letter to the acronym for hyperactivity) I think the main issue is really a lack of an ability to concentrate which controlled doses of stimulants seem to provide them with to an extent.