You cannot save anyone, only guide them in the right direction. Like suggesting that they might have a problem.
Remember this always, an alcoholic will take you down mentally, physcially, and spiritually because that's where they're at.
You can carry the message but you cannot carry the drunk, they will take you down with them everytime.
It's called enabling, and what you're really doing is killing them softly as you slowly become their main source of income.
The next thing you know you're taking care of them like a child, and they will run with it, acting more and more like a child everyday.
If you don't have the strength at this point to seperate, then chances are that an ambulance and the police are next.
The best thing you can do is leave them to their own devices.
I would not suggest AA, as it is my experience that if they are not ready they will just find someone else who doesn't want to be there and end up with a new drinking buddy.
When or if ever they are ready to stop they will go to an AA meeting on their own accord, that's the importance of Anonymity.
You don't reqruit drunks to get sobber, they find it themselves because they're sick and tired of being sick and tired.
That's when the fog clears and they're ready to listen and get help.
Until then you're just pissing in the wind.
Most of all this will be painfull for you to watch, just stick your guns. It'll be hard but you'll have to learn to love them from a distance, this gives them a chance to burn all bridges.
Once they have no where else to turn then they are forced to take a look at themselves, this is when miracles happen.
They have a sobering moment and they seek help on their own.
Good luck, tough love is a dish served cold.