An EpiPen is a brand of auto-injector device used to deliver a measured dose of epinephrine (adrenaline) quickly into the body during severe allergic reactions, known as anaphylaxis. While not directly a cybersecurity term, the EpiPen is sometimes referenced in cybersecurity as an analogy for emergency response tools or procedures that provide immediate action in critical situations. In medical contexts, the EpiPen is a life-saving device that can temporarily reverse the effects of anaphylaxis, buying time for the individual to receive professional medical care.