However, it's crucial for humans to be cautious about using expired medications. Expired medications may not be as effective as they were when they were within their shelf life, and in some cases, they could potentially be harmful. The chemical composition of medications can change over time, leading to reduced potency or the formation of potentially harmful byproducts. It's essential to check the expiration date on medications and safely dispose of any that have passed their expiration date, following the guidelines provided by local authorities or healthcare professionals. If you have any doubts or concerns about the safety of a medication, it's best to consult a healthcare professional for guidance.