Polyethylene glycol 3350 with electrolytes
"I'm down to my last glass of this stuff and all I can really say is it's not for me. Every single glass of this has made me vomit 20-30 minutes after drinking. Enough of it has gone down so that it's working, so every time I vomit, liquid is also coming out of the other end. It's really awful. The vomiting is incredibly violent and there is little warning before it happens."