Hi FreeOwl, I'm so sorry that you're suffering, that's the price to be paid for caring. Has you friend tried alternative methods?
I was probably 12 months off imploding physically, I was part way down the abyss. I left AA and via Sober Recovery, discovered a method and mindset that gave me back my life. It wasn't a miracle, but once I'd learnt the method and made a decision to never drink again, it felt like a spiritual experience. I felt freedom. Freedom to rebuild my life.
I asked about AA because that's the first port of call, but if that doesn't work, there are other ways. Hugs to you and your friend, I'm glad he's safe at the moment.