Antipsychotic medications are used to treat various mental health disorders such as schizophrenia, bipolar disorder, and depression with psychosis. The term "antipsychotic" refers to the primary function of these drugs, which is to help alleviate psychotic symptoms such as hallucinations, delusions, and disorganized thoughts. However, there are other terms that can be used interchangeably with "antipsychotic" such as neuroleptic, tranquilizer, and antischizophrenic. Neuroleptic is an older term that was coined for these types of drugs, and it means that they have the ability to affect the nervous system. Tranquilizer refers to the calming effect that these medications can have. Antischizophrenic, as the name suggests, refers specifically to their use in treating schizophrenia.