Using ophthalmic solutions beyond their expiration date may reduce the medication’s effectiveness and could introduce potential risks. Preservatives in the solution may degrade, increasing the possibility of bacterial contamination. Furthermore, the active ingredient might lose potency, failing to provide the intended therapeutic effect. For instance, if eye drops designed to alleviate allergy symptoms are used past their expiration date, the user may not experience relief, and the compromised preservatives could make the eye more susceptible to infection.
Adhering to expiration dates on medications, including eye drops, is essential for maintaining ocular health. Expired medications may not only be less effective but could also harbor harmful bacteria, leading to eye infections or irritation. Historically, expiration dates were implemented to ensure drug stability and efficacy, protecting consumers from using potentially dangerous or ineffective products. Proper storage of eye drops can also influence their longevity, but expiration dates should always be the primary guideline.