Which drug is administered via an EpiPen?

The drug administered via an EpiPen is epinephrine. EpiPens are specifically designed to deliver a pre-measured dose of epinephrine, which is a potent and rapid-acting medication used primarily in emergency situations for the treatment of severe allergic reactions, known as anaphylaxis.

Epinephrine works by constricting blood vessels, which helps to increase blood pressure, and by dilating the airways in the lungs, making breathing easier for the patient experiencing an allergic reaction. Its quick action is critical in emergency settings where immediate intervention is necessary.

The other options, such as corticosteroids, antihistamines, and analgesics, do not address the immediate and life-threatening aspects of anaphylaxis as epinephrine does. While corticosteroids and antihistamines may be used in managing allergic reactions and their symptoms, they are not suitable for the rapid response required during anaphylaxis. Analgesics are used primarily for pain relief and have no role in treating severe allergic reactions.