Hi FedUP,
I don't know how to get someone on drugs to deal with it. I'm learning that I have no capacity to affect my alcoholic father's drinking. I have tried for years, decades. I can tell him that I love and support him, and if he decides to get help, I will be there.
But I can't live with the chaos. I need to take care of myself and find peace in myself. In the meantime, he may die or kill someone from this disease. Or hurt my mother. That is a tough thing for me to accept.
Maybe your father and brothers are in a place where they are ready to get help. If not, I don't know if you can make them.
I didn't choose my family, but I can be around sane, healthy people, if I choose to. You're right, it does suck.