listen it is important you deal with it sooner than later my fiances mother is an alcoholic and has made everyone's life a mess me and my fiance even had to adopt her son because she could not care for him....and I was only 18 when we adopted him....she has crashed other people vehicles and can't even remember what she said a few minutes before...you need to get him help maybe talk to someone close to him...it will ruin his and everyone around hims life. if he doesn't like what your saying then you have to know that you did the best you could...only people who want help can get it....HTH
If his drinking is affecting your happiness or is leading to unpleasant situations on a regular basis then he probably is drinking too much. The marker for too much drinking is negative consequnces. If he or you or those around you are harmed whether emotionally, physically, or verbally by his behaviour under the influence then you might want to discuss his drinking with him.The best time to do this is when he is sober and relaxed.You might want to try a calm discussion and stress that you are concerned with his welfare and unhappy with his actions when he drinks. If he agrees then you might try to have him reduce his consumption. If he has trouble doing so, he is likely in dangerous territory when it comes to drinking. If he wants to stop because he agrees he has a problem, then seek out professional help.I would suggest taking a look at the A.A. site. There you can find information on wether or not one is an alcoholic and the help that this organization can provide. I hope this helps! Good Luck.
keep a count of how many he/she has , and how often keep track of it see if it gets worse . if so confront your other mates possibly who know him/her to see if they have noticed the drinking , get your friends & you to sit down and talk with him/her.
@louisesmith - Thanks for your advice! I said something to him about it and so did some of my other mates... he seems to have cut back a lot, but at the time he didn't think it was a real issue. I think he knows now that people are starting to notice and worry about him. I will keep an eye on it and try to help him get through.