Mephedrone is a very addictive susbtance.
Rc Shop which sell that shit, don't finish properly the protocol, and a lot of impur substance finish in the final product, be careful with this sustance.
Occasionnally maybe, daily use, not a good idea, execpt if you are a meth addict, or amphet addcit, that could be a good alternative = when spped isn't in the street.
Legal? In salt bath, or plant feeder, my sequoïa growth at the rythm of 3meters per/day.^^
Good rush, but for 1h maxi, so you take, and you take, and you take...etc, alll night long
Some case of dangerous vasoconstriction on the members extremity was referenced, and a little bit of death..too.
Take care.