Using expired eye drops is not recommended as they can become less effective or contaminated over time. Eye drops that are past their expiration date can become contaminated, especially if theyve been opened. Eye drops contain preservatives that typically limit germs from growing around or within. These preservatives should prevent contamination until the expiration date of the eye drops. If you accidentally use expired eye drops, you should let your healthcare provider know and monitor your symptoms closely. If you experience any bothersome effects, such as irritation or pain, you may need to seek medical care. Using expired eye drops can lead to irritation, inflammation, or infection. The medication may not work as it should, which can be a problem if you’re treating something serious, like an eye infection. The active ingredients can lose their effectiveness or introduce bacteria into your eyes. Eye drops lose their potency over time, and the active ingredients can degrade, meaning they may not provide the intended relief for your condition. Expired eye drops may produce uncomfortable side effects, such as itching, blurred vision, burning, and redness. Therefore, it is best to avoid using expired eye drops and discard them properly. If you are unsure whether your eye drops are still effective and safe, check with your healthcare provider or pharmacist before using them.