I dont want to sound like an asshole, but what the fuck? This is why the legal drinking age in the US is 21, so that cases like this dont happen. If you cant haddle your alcohol, you shouldn't even bee drinking in the first place. If you act like an idiot, have a good friend to prevent you to do these things.
On an another note, I hope he gets better and not worse, hopefully, this will be a lesson learnt.