The expiration date and potency is only valid when the epi is stored as directed, 68-77 degrees Fahrenheit, or 77 degrees Mean Kinetic Temperature. Storage outside that range invalidates the expiration date, and is technically illegal to administer because it is adulterated. That’s the ugly little secret that the manufacturers never stress.
Bullcrap. As long as the liquid is still a pale amber color it’s fine. I’ve got some that are 5 years old and there ain’t a thing wrong with them. Manufacturers pull expiration dates out of their backsides.
L