Olanzapine is an antipsychotic medication that is generally not interfered with by food, which does not interfere with the absorption of the medication and is not irritating to the stomach, so it can be taken both before and after meals. Olanzapine can improve the symptoms of schizophrenia such as hallucinations, suspicion and sleep problems. The dosage and frequency of the medication should be adjusted according to the condition under the guidance of the doctor, and should not be stopped by yourself. If it is taken with two meals, it is recommended that patients take it half an hour after lunch and half an hour after dinner; if it is taken with one meal, it is recommended that it be taken one hour before going to bed at night, which can improve patients’ sleep. It should be noted that patients who are allergic to the ingredients of olanzapine, narrow-angle glaucoma, etc. are prohibited. It is also recommended that patients quit smoking and drinking during the treatment period, and should consult a doctor if they want to take other drugs to avoid drug interactions, which are not conducive to the recovery of the condition. Drugs should be used in accordance with medical advice.