At extremely high doses, DXM can lead to a coma or even be lethal by suppressing the central nervous system. If that happens, the brain can stop sending signals to the lungs to breathe, causing serious damage or death. Also, some drugs that people take to get the DXM high include other ingredients that can have harmful effects in high doses.
Some people who abuse DXM have reported hangover effects, although they are different from the hangover effects of drinking. Socially, although both DXM abuse and alcohol…
DXM abuse has been associated with impaired brain function, but it’s not clear that it causes lasting brain damage.
Yes. Although rare, in large enough quantities, DXM can suppress the central nervous system, which could result in death.