From what you say here, as well as your freepmail to me, it seems clear to me that we are talking about two different things. You are fearfull of the over use of 'mild' drugs like Prozac etc. (and rightly so) in situation where they aren't really needed, and the problem can be delt with in other ways. In your cases the person is rational before treatment, but I'm talking about serious mental illness that is real, that if untreated, or if treatment stop, leaves the preson utterly irrational, devoid of all logic, civilation, morality. Not long ago some woman was pushed in front of a subway train by such a person.
In ages past these people would be locked up forever in a mental institution or deemed to be possessed of a evil spirit, but medication makes it possible for them to live a pretty normal life...if they use it.
Just because these drugs get ABUSED, doesn't mean that there are not cases wherer they need to be used.