calling an ambulance isn't gonna do anything... they'll get there and he'll promptly tell them to fuck off.. and they will have to because this is america and he has rights.. just because you need help doesnt mean anybody can force you into getting help.. (unless he is suicidal, homicidal or so out of it that he is unable to provide food, clothing or shelter for himself) in ny i worked for a mobile crisis unit for psychiatric emergencies and stuff like this.. we basically went to people like your roommates house and told him to get his ass into gear or he's gonna die.. we would pretty much scare the shit out of him enough to make him go to a hospital.. you can call up the local police precicnt and see if they have any of those services... also you can visit alanon.. (aa) if you are THAT seriously concerned maybe you should attend an alanon meeting yourself, ask a bunch of people there what they think, what really works and take it from there.. chances are he's probably fully detoxed right now since it's been a few days so there is probably nothing to worry about until he starts up again, which he probably will unless something changes...