piPens. They can quickly deliver a lifesaving dose of the chemical epinephrine to anyone experiencing a severe allergic reaction. But their price is soaring and attorneys general and Congress are investigating why. How do they work, and what makes them so powerful?
When people with severe allergies are exposed to an allergen, their body goes into overdrive — and epinephrine auto-injectors, of which EpiPen is the most popular incarnation, can stop that super-reaction before it kills them.
Watch our video to see how.