Risperidone injections are generally recommended to be given intramuscularly, once every two weeks, not more than once every four weeks if the dose needs to be adjusted upward, with a window of ±3 days. Risperidone injections are used to treat acute schizophrenia, chronic schizophrenia, and a variety of psychopathic states with markedly positive symptoms, and to help alleviate the emotional symptoms associated with schizophrenia, and must be administered by a healthcare professional, usually every two weeks, with the ability to increase the dosage at the discretion of the patient’s specialty physician, if needed. Common adverse reactions to risperidone injections include insomnia, headache, depression, and upper respiratory tract infections, and are contraindicated in individuals who are allergic to risperidone, paliperidone, and risperidone excipients. In addition, the application of risperidone injection has certain risks, and needs to be guided by a specialized doctor, and should not be used without authorization. If you have any other questions, it is recommended to consult a specialized doctor for guidance.