It's really hard to reliably treat schizophrenics since they often don't want to be treated. I don't expect that this guy would take any pills without being forced to. (And then the medication isn't perfect.)
"Everything that you think about who you are is in fact the result of a mental defect. But, if you take these pills we can make you a different person" is the toughest sell in the world. And the psychiatric community needs to wise up to that fact.