Can I still use the ointment after it has expired?

Generally speaking, it is not recommended to continue using ointments after their expiration date. Detailed analysis is as follows:

After the expiration date, the active ingredients in the ointment may change, leading to reduced or complete loss of effectiveness. Especially for ointments that require sterile storage, over time the packaging may no longer be completely sealed, allowing microorganisms from the environment, such as bacteria and mold, to enter the ointment and multiply significantly. Using an ointment contaminated with microorganisms may cause adverse reactions such as skin infections and allergies, including symptoms like localized redness, swelling, itching, and increased pain. Therefore, it is recommended not to continue using ointments after they have expired.

It is also important to regularly check medicines at home and promptly dispose of expired ones. When storing medicines, follow the storage instructions provided on the label or package insert. If any signs of discoloration, odor change, or deterioration appear in the medicine, regardless of whether it has expired or not, discontinue use immediately and consult a doctor or pharmacist before purchasing new medication, to ensure both safety and effectiveness of the medication.