As a healthcare professional, I can provide you with information on the duration that nitroglycerin pills are effective. Nitroglycerin is a medication used to prevent and treat angina (chest pain) caused by coronary artery disease. It works by widening blood vessels, allowing the heart to get more oxygen. Nitroglycerin pills, which are typically taken sublingually (dissolved under the tongue), should be kept in their original container and stored tightly closed to maintain their stability. It's important to replace your tablets every 3 to 6 months to ensure their effectiveness, as their potency can decrease over time if not stored properly. Additionally, a nitroglycerin spray has a longer shelf life and may last up to 2 years before it expires. Remember to always follow the storage and usage instructions provided by your healthcare provider or pharmacist to ensure the medication remains effective. read more >>

Keep your nitroglycerin in the container it came in and tightly closed. Do not open your sublingual nitroglycerin until you need a dose. Replace your tablets every 3 to 6 months. A nitroglycerin spray may last up to 2 years before it expires.read more >>