hi, stumbled across this thread... tried jack3d recently, just a little bit recreationally.
my cousin bought a couple of tubs of the original stuff just before it was banned in oz, about a month ago. definitely a little bit of a buzz there.
in fact, the main point of this post is to warn you that my cousin can no longer work out without it. completely lethargic without it. he is hooked.
however the version that is now sold no longer has the DMAA in it (which happened to synergise really well with the caffeine also in it).
i'm sure the same goes for mesomorph. i think shotgun also contains the scheduled substance.
anyway, regarding the dehydration/sleep issue, one should avoid using such formulas if working out in the arvo/late arvo. also, the 4 litres of water or whatever it is, required to flush the crap out of your system takes other stuff out with it, so taking hi-potency multivitamin supplements is recommended afterwards too. there's a whole bunch of recovery stuff you can take post workout too including natural muscle developers and tribulus, iirc. and xtend can be used during training, which helps my cousin a lot.
at night, he takes these ultra high potency magniesium tablets that help him switch right off at night before bed despite all of the junk he pumps into his body. i'm not sure what else is in it, but it gave me a very relaxing sleep when i tried it. woke up feeling refreshed albeit a few hours before i was supposed to. that's how good it was. i can get names of all of these substances and products if people are interested. however you all probably know more about it than me.