I dont know , it sounds t be alot of things , but comign from my own experience, my husbband has the same kid of outrage, like very abnormal, and he is a drinker, but even when hes not drinking he is still like a time bomb...my point, it could be the vicoden, coming from a recovering addict of opiates, I wasnt violent to that extent but my behavior was night and day when I got off them. And one other thing , men, sometimes Ive just found they can be beasts, no reason other than there freaken testerone, and they think its ok because THERE THE MAN. Its sad and frustrating, good luck hope this helps
Some of those medication might be worsening mood swings and they should confirm a conclusive diagnosis as to whether he has bipolar. There is some information on the welcome page you could read and discuss with his psychiatrist. If he does have bipolar they might need to re evaluate what medications he would need but that's within a psychiatrist's discretion. If he is having any behavior that is violent or threatening honestly that would mean he needs help right away. It may be part of his specific psychiatric disability but it should not be directed at you so you should (from a distance such as on the phone) basically state that he would need to get help or that you would need to separate because you shouldn't wait until it gets out of hand.