my best friend get drunk what should i do?

First try to ask you friend when he is not drunk the reason why he is doing it? I think he has a problem and since you are his friend try helping him out and talk to him in this way he wont have to resort to drinking. Dont tolerate him by letting him drink always he cant solve his problems by drinking... I am just saying this as a men who knows that men usually resort to drinking always if they have certain problems..... hope you can help him my friend and good luck....

dont drink so you could attend to him.. give him lots of food while drinking.. will help prevent getting too drunk.. and have him drink water too! so his stomach will get full easily. when drunk, give him black coffee and/or energy drink.. if possible let him take a bath with cold water... or ask him to sleep.