Epinephrine in these autoinjectors degrades relatively quickly (over the course of months). It's good to have more epi-pens laying around, but the expiration ma

Epinephrine in these autoinjectors degrades relatively quickly (over the course of months). It's good to have more epi-pens laying around, but the expiration makes this a different situation from HDDs (though they, too, have an expiration but usually on a longer time horizon).