NH3 is ammonia, Fedele. Good explanation.
Bill D,- true up to a point, depending on what sort of beer you drink! The more water you drink the better for your kidneys for that reason, but alcohol is a diuretic, so strong beers and spirits make you lose more liquid from the body than you have drunk which is BAD for the kidneys and evereything else(dehydration being one of the main causes of hangovers).

So that's why they make all those GP beers- it's for your own good!

Noreen

[GP= gnat's piss]