I'd like to share an experience SWIM had when they obtained a powder sample of 6-apb that the vendor had cut so that the advised dosage was 300mg.
The powder was bright white and crystalline in appearance with little chemical odour.
SWIM first had 50 mg insufflated dosage which burned like hell and continued to burn for next hour.
After waiting half an hour, slight stimulation began to affect SWIM. This was followed by 250mg dose bombed and taken with water.
An hour after this, SWIM began feeling tightness in the chest/lungs area followed by an hour of coughing up bright green gack (phlegm-like matter) The next 48 hours were spent in an extremely stimulated state, pupils massively dilated, slight gurning and great ability to concentrate. HOWEVER this did not end and over 48 more hours, SWIM grew anxious as to the content of the powder and attempted to quell the stimulation with herbal smoking.
After taking the dosages on sunday, SWIM could FINALLY sleep on the thursday.
SWIM realises his stupidity in not gradually testing the product and ended up with what may be a reckless dose of MDPV and/or a-PVP.
Noticed on thursday, SWIM's nose was bleeding from the inside, indicating whatever chemical present is highly irritant and most likely dangerous.
You can't trust vendors.