As the sister of someone with Schizophrenia, I see how often my brother decides to stop taking his medications for a variety of reasons that he finds: they make him sleepy, he doesn't need them, he's traveling, etc.. As soon as he does, we know he is off his medication and he reverts to violent thinking.  As far as I have seen, sadly, there is no cure for this illness. I believe as a society we are still very naive around mental illness, even doctors.