Yeah cough surrup will fuck you up (very very very very much) but jesus...so will lsd and mushrooms and dmt and 2ce, ect. I knew a kid that was a serious DXM addict. He had a binge where he did so much his brain swelled and he spent 2 weeks in ICU. Kid got fired from work and couldn't find the way back to his house sober. DXM is cheap fun but it is NOT intended to be used as a intoxicant, same goes for fucking Duster.