Medical Editor: Jay W. Marks, MD. A couple of years ago an episode of the popular TV series Grey's Anatomy featured a woman with two uteruses (or uteri). This unusual condition does, in fact, occur as a result of abnormal fetal development.
Currently, EpiPens expire 18 months from date of manufacturing. Facing criticism for the drug's rapidly rising price, Bresch said the company hopes the expiration date can be extended to a minimum of 24 months.
Like any medication, EpiPenÂ® and EpiPen JrÂ® AutoâInjector has an expiration date, which is printed on the side of the autoâinjector. Because the effectiveness of epinephrine may decrease after the expiration date, you should promptly refill your prescription before the expiration date.