Epinephrine Autoinjector

An epinephrine autoinjector is a medical device used to deliver a measured dose (or doses) of epinephrine (also known as adrenaline) using autoinjector technology, most frequently for the treatment of acute allergic reactions to avoid or treat the onset of anaphylactic shock.

Trade names for this device include EpiPen, Twinject, Adrenaclick, Anapen, Jext, and Auvi-Q. The EpiPen was originally derived from the ComboPen, a product developed for the military for treating exposure to nerve agents.