Haloperidol and carbamazepin what does it treat?

My ex is prescribed haloperidol and carbamazepin what do these to medicines treat? He is diagnosed schizophrenic and these are his two prescriptions, but it seems like it’s not helping him

Haloperidol is an anti-psychotic. My daughter is on that in the injection form, and is doing well for 6 months now on it. She has lost most of her delusions and hallucinations, and comes out of her room on a daily basis now. She used to be psychotic (talking to invisible people and thinking everyone was doing bad things with their thoughts to her) and isolated in her room almost all day every day.