true. it has to do with how well the yopo snuff is prepared, but beyond that the shit is extremely painful to snort. you become horribly congested instantly and can't help but gag. next thing you know your vomiting and blowing your nose, at the same time. SWIM was clogged up for the rest of the week! it worked very well but it was a hard experience. overall, it's just part of the ritual.