The writers ask if it is time expiration dates are reviewed.
Testing showed 24 of the 40 expired devices contained at least 90 percent of their stated amount of epinephrine, enough to be considered as potent as when they were made.
All of them contained at least 80 percent of their labeled concentration of medication.
The takeaway? Even EpiPens stored in less than ideal conditions may last longer than their labels say they do, and if there’s no other option, an expired EpiPen may be better than nothing, Cantrell says.