I'm sorry to hear about your cousin, he probably experienced some very bad withdrawels when they took him off his meds, they should have slowly taken him off of them with close monitoring instead of just taking him off right away, especially if he is unstable.
yeah i guess i shouldnt just make unnecessary generalaztions about the meds like i do, but i remember that and it was real messed up at the time
each person is different and whatever's best for the individual can vary