I was really surprised at the lack of negative long term side effects that came from so much dxm abuse. She had doctors complete check out her body and brain to check for holes in her brain or any serious damage to her body from the stuff and they found nothing. She isn't exactly the average girl, and has some quirks, but she's hardly lost in space or perma detached from reality or anything serious.
DXM is great to write music or really do anything creative with, but it isn't something you should do all the time.
btw even if they pumped your stomach it wouldn't change a thing. It's absorbed into your stomach extremely quick and I know people used to drink it then puke on purpose for some reason, I forget why, I think it was maybe if you get cough syrup with other stuff in it but just want the dxm. I forget exactly
Oh and to trip really hard don't smoke weed all day or before taking sxm then wait till you're tripping and smoke weed. It will have a synergetic effect. DXM is one of the safest most powerful drugs I know of for altering your mind, but I don't condone it unless you are going to do something creative.