To provide a short summary of the provided content, I will point out to Andrew that the antipsychotic medication, risperidone 1mg nocte, prescribed by his GP will help stabilize his persecutory delusions and give him peace of mind in his apartment. The medication is necessary for lowering his psychotic symptoms such as delusions and hallucinations, and it can also aid in preventing those symptoms from recurring. Furthermore, the prescription includes short-term and long-term treatment goals to ensure his recovery.