I have major recurrant depression not manic depression but I can see some of my problems in what you have said about your son. When you have psy problems it is hard once you are on your med you feel better and think that it is all done and fall of the wagon to say. I have never been into alcohol or drugs tho but my mom was a drug addict. Even with his illness sometimes you cant do everything. He has to take some responsibility for himself even if it is harder for him than most other people. I hope if he hits rock bottom it will help him relize that he must get help.
sincerly,
Rachel