Most of the time I just let the adrenaline burn out while getting on with what needs doing unless shock is also involved, then I have to sit for a while.
Only one time did I grab a cup of coffee and that kept me shaking longer. Also one time I grabbed a beer, and that also kept me shaking. So, I figure booze and caffeine are not useful.
Any way to speed up recovery, aside from more danger or just going flat?