Which symptom would indicate further teaching is required regarding nitroglycerin usage?

Replenishing the supply of nitroglycerin every six months suggests a misunderstanding of the medication's shelf life and efficacy. Nitroglycerin, particularly in tablet form, has a specific expiration date that should be adhered to for safety and effectiveness. Nitroglycerin pills can lose potency over time, and it is essential to ensure that patients are using an effective product. The standard recommendation is to check the expiration date and replace them as needed, rather than adhering to a strict six-month timeline.

Taking nitroglycerin 10 minutes before physical activity is a common practice to prevent angina, as it allows the medication to take effect. Treating headaches associated with nitroglycerin use with acetaminophen is also appropriate since headaches are a common side effect of the medication. Using nitroglycerin for chest pain relief aligns with its intended purpose as a vasodilator to alleviate angina symptoms.