If those Scovilles are ribbling up your tongue and throat, never drink water or softdrinks or wine or beer, but something with plenty of fat in it: milk, cream, even oil.
Water makes it worse, not better.
Personally I see no reason for getting this hot that you do not taste anyything anymore. A certain, mild hotness that is one nuance of taste amognst the toher aromes, okay, fine, I' in for that. But if it kills my tongue and I cannot taste anything else anymore - what use is in that?