What should be done if a nitroglycerin container has been opened for more than 6 months?

When a nitroglycerin container has been opened for more than 6 months, it is essential to dispose of it. Nitroglycerin is a medication that is sensitive to light, heat, and moisture, and its effectiveness can degrade after being exposed to air and environmental factors over time. Once opened, the stability and potency of the medication diminish significantly after the 6-month mark, which can lead to reduced therapeutic effects for patients who rely on it for conditions like angina.

To ensure patient safety and optimal efficacy, it is best practice to discard any nitroglycerin that has surpassed its recommended opened shelf life and obtain a new supply. This approach minimizes the risk of patients receiving an ineffective dose that could compromise their health.