Why would someone not salivate before they throw up?

Answer 1

Well its because your body is getting ready for your tummy acids when your mouth waters it is your bodys way of protecting your teeth.

Answer 2

Actually, our body produce more saliva instantly just before we vomit. It is to ensure and protect the lining of the throat and lubrication because the vomit is acidic and could damage the area.

There is such a thing as an episode of vomiting that comes on very suddenly, in a matter of seconds - it has happened to most people once or twice, and the body does not have time to produce the extra saliva. Still, increased salivation before vomiting is the norm in most cases.

Answer 3

Because the saliva coats your mouth, protecting it from stomach acids.