My 45 year old younger brother was been an alcoholic for 20+ years, mainly drinking very large amounts of 3.2 beer..... He has gone to AA, been to psych hospital for detox, or just tries to self detox, ........but today I went to check on him......within a week it looks like he has consumed 25 to 30 of these beers a day. Well, I noticed he kept spitting like he was about to throw up, this went on for quite a while, and then he threw up TONS of dark brown liquid!!! I told him that I would take him to the hospital if he needed me to. He said he hasn t really had much food to eat in the past week. What does the dark brown vomit mean?