Quote from: Bob Arctor on November 05, 2012, 01:19 pmBTW, do you, or anyone else, know what are the 'tells' of d-amphetamine? What are main differences in effects from racemic amph?Hard to be precise, since we're talking about things that are going to vary from person to person (and since it's almost impossible to be 100% certain what molecules you've just ingested). In general, dextroamphetamine (i.e. d-amphetamine, two ways of saying the same thing) is more psychologically acting and produces less peripheral stimulation. Less jittery, less compulsive (jaw grinding/clenching, fidgeting, ticks, etc.). Which isn't to say it lacks such effects -- it certainly causes all of those as well. But in general, it provides more mental stimulation and less physical/peripheral stimulation, whereas levoamphetamine (the other isomer, i.e. l-amphetamine) is the opposite.It's interesting to note that levoMETHamphetamine is different. Supposedly l-methamphetamine has almost no noticeable mental stimulation at all and only very minor peripheral stimulation (as in it's less powerful than caffeine). D-methamphetamine is crystal meth (well, the part of crystal meth that's actually useful, at least).