Can boric acid and borneol ear drops be used after expiration?
Under normal circumstances, boric acid and borneol ear drops should not be used after expiration, as they may lose therapeutic effectiveness and hinder disease recovery. If discomfort occurs, it is recommended to seek medical attention promptly and use appropriate medications under a doctor's guidance. Detailed analysis is as follows:

Boric acid and borneol ear drops are anti-inflammatory and analgesic medications used primarily for symptoms such as ear pain, ear blockage, and discharge of yellow fluid from the ear. After expiration, the active ingredients in the medication gradually degrade over time, losing their potency and thereby reducing the drug's therapeutic effect. Additionally, expired medications are more susceptible to microbial contamination, which may increase the risks associated with their use.
Moreover, using expired medications may increase the risk of adverse reactions, including allergic responses or other discomforts. Given the relatively delicate structure of the ear, using expired drugs could worsen existing symptoms. Therefore, to avoid causing harm to the body, the use of expired medications is not recommended.
In daily life, maintaining good habits, keeping the ears clean and hygienic, and undergoing regular medical check-ups contribute to overall health.