I believe that it was the Hippocampus that was damaged.
I would say "A Nothing" Just because of the fact that nothing can really speed up the rate of alcohol breaking down! The liver works on its own speed, Water can help a bit tho.
I haven't heard of PRICES method. I only know of PRICE which stands for P - protect
R - rest
I - ice
C - compress
E - elevate
However, since we are dealing with injuries, S can stand for SPLINT. You apply a splint on injuries with broken bones. This is to ensure that the edges of the broken bones will meld and mend together without any difficulty.