Can you tell me about drugs used to treat schizophrenia?

Different ones. Antipsychotic medications are used to treat the hallucinations and delusions associated with schizophrenia. There are 20 different ones. Treatment for schizophrenia is best provided by a board certified psychiatrist. Antipsychotic medications require careful monitoring, especially as schizophrenia is a chronic condition. I like Invega sustenna (paliperidone palmitate) which is an injection that lasts one month.