There are no studies that show using these medications after their expiration date causes serious harm. The risk is related to how effective the medication is. Taking them after their expiration dates could cause a serious health risk or consequence because the medications are not as effective.May 24, 2021
Doxycycline is used to treat infections caused by bacteria, including pneumonia and other respiratory tract infections; certain infections of the skin or eye; infections of the lymphatic, intestinal, genital, and urinary systems; and certain other infections that are spread by ticks, lice, mites, infected animals, or Dec 15, 2017
DOXYCYCLINE (dox i SYE kleen) is a tetracycline antibiotic. It kills certain bacteria or stops their growth. It is used to treat many kinds of infections, like dental, skin, respiratory, and urinary tract infections. It also treats acne, Lyme disease, malaria, and certain sexually transmitted infections.