Quetiapine is not a sleeping pill. Quetiapine is a drug for schizophrenia, a second-generation antipsychotic with pharmacological effects: 5-hydroxytryptamine and dopamine receptor antagonist. It can be used for various types of schizophrenia and is mainly effective for positive symptoms of schizophrenia, which refers to irritability, shouting, and mania-like symptoms, and can also treat positive psychotic symptoms of other diseases, such as manic symptoms that occur in the later stages of Alzheimer’s disease. It can also reduce the symptoms of anxiety and depression associated with schizophrenia. Since this drug mainly targets the positive psychotic symptoms of schizophrenia, it has a certain inhibitory effect, and after taking it, it is easy to sedate, sleepy, and limb weakness, and severe cases may have hypotension, but one should never use quetiapine as a sleeping pill because of the inhibitory and sedative effects of the drug, as the side effects will be relatively large.