The nurse is caring for a patient in the clinic who states that he is afraid of taking antihistamines because he is a truck driver. What is the best information for the nurse to give this patient?

A. “Take a lower dose than normal when you have to drive.” Lowering the dose does not reliably prevent sedation, and even mild drowsiness can impair alertness needed for safe driving. Dose reduction still carries unpredictable effects on reaction time and concentration. B. “Take the medication only when you are not driving.” This may prevent sedation during driving but does not offer a practical solution for someone who drives frequently for work. The patient may need allergy relief during driving hours, so this advice may not meet daily functional needs. C. “You may be able to safely take a second-generation antihistamine.” Second-generation antihistamines such as loratadine and fexofenadine cause minimal sedation and are preferred for individuals who must remain alert. They provide symptom relief without the high risk of drowsiness seen in first-generation drugs. D. “You are correct: you should not take antihistamines.” This overgeneralizes and may withhold effective treatment, since not all antihistamines impair alertness. Avoiding all antihistamines is unnecessary when safer second-generation options are available.