An antipyretic agent is a substance or medication that helps to reduce or lower fever. It works by targeting the body's temperature-regulating system and inhibiting the production of certain chemicals that contribute to fever. Antipyretic agents are commonly used to alleviate fever-related symptoms such as discomfort, chills, and headache. Common examples of antipyretic agents include medications such as acetaminophen (paracetamol) and non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen. They are widely available over-the-counter and can be used under appropriate dosage and guidance to manage fever in various conditions.