Schizophrenic meds are horrific. The side effects render the patient useless even to themselves much of the time. that is why it is so difficult to get them to stay on them. Most bi-polar people I know are on lithium which makes them lethargic unless they have been on them for a long time and then some of them can function almost normally.
Cliffy - You know as well as I it depends upon the severity of the illness. Next - What else can be done is the question.
Little known fact - many soldiers with PTSD also succumb to a Psychotic condition - for persons that are Psychotic, drugs work well. For those with PTSD they do not.