My dad has a problem?

my dad has had a drinking problem for my whole life.. its torn the fam apart. I am grown now but now he is getting to the point where he has to go to the hospitol for fallin out n heart palpitation. We (me n my mom n other family) has had interventions.Hes tried programs n everything. He jsut wont stop. i feel as if i can loose him very soon .. I have talked to him told him how much i care n it hurts us. Ive given him programs. i dunno wt else to do. can someone help or tell me how they dealt with something lke this. It hurts to see him like this