I'm nearly sure Whack is Naphyrone aka NRG-1, which is now being brought in as a "replacement" for Mephedrone...
Just gone through a hellish few days after taking about 0.4g of this shit on Friday night...
Most feedback I have read rings true with what I experienced, but alarmingly some people have given it positive feedback (hopefully just ppl confusing their chemicals - and not some vendor attempting to promote their product and thereby potentially ruining lives), I would beg anyone considering taking this stuff not to do it! It is really, really bad! I have experience taking various chemicals and have got myself in some really bad states... But nothing compares to this...
Because the effects come on very slowly, it's far too easy to take too much before its really kicked in... A few hours of a highly charged, manic chatty buzz (but not at all euphoric) are then followed by about 8-10 hours of a racing heart, tight chest, paranoia and inability to sleep...
Anyway just got back from getting myself checked out today in A&E, because with any drug that makes you feel the way this shit does the risks of serious Liver/Kidney/Cardio-vascular damage must be really high... One of the nurses told me they had a ridiculos number of people in who had taken whack in the last few days, some of them going through serious paranoid psychotic episodes - and these paranoias will potentially stay with them for life...
I have never in my life come across a drug where the line between doing enough to get high and enough to OD and enter a world of hurt is so small... The suppoused "safe dosage" is 0.01g - so 1g should give you enough for 100 hits - obviously people used to mephedrone will not be doing this, especially as they were probably told it was similar to meph when they were sold it...
Anyway just my feelings on the subject... No doubt people will continue to take the stuff and seriously mess their bodies up and get themselves sectioned... But it's really made me re-evaluate attitude towards stimulants in general...
Why permanently risk damage to your organs or changes to your brain chemistry for a chemical that doesnt even provide a particularly nice high...