Yes, these symptoms can be side effects of his medications. He is taking a combination of selective serotonin reuptake inhibitors (SSRIs) and benzodiazepines. Excessive drowsiness is a known effect of benzodiazepines, and when combined, these medicines can sometimes lead to a feeling of apathy or social withdrawal. Please do not stop or alter his dosages abruptly, as sudden changes can trigger withdrawal symptoms. Instead, consult his psychiatrist promptly. The doctor can safely review his regimen, reduce any therapeutic duplication, and gradually adjust the treatment plan to minimise drowsiness while ensuring his underlying condition is comfortably managed.