The nurse is planning discharge education for a client with a new prescription for montelukast. Which adverse effect should the nurse instruct the client to report to the healthcare provider?

A. Depression: Montelukast has been associated with neuropsychiatric effects, including depression, anxiety, and suicidal thoughts. Clients should be instructed to report mood changes promptly to the healthcare provider to ensure early intervention and medication safety. B. Blurred vision: Blurred vision is not a common adverse effect of montelukast. While any new visual changes should be evaluated, it is not the primary concern related to this medication. C. Palpitations: Palpitations are not typically linked to montelukast therapy. Cardiovascular symptoms should still be monitored if present, but they are not the main adverse effect prompting urgent reporting. D. Constipation: Constipation is generally mild and uncommon with montelukast. It does not require immediate reporting unless severe or persistent, making it a lower-priority adverse effect compared to neuropsychiatric symptoms.