Final answer:
Epinephrine is a medication used to treat severe allergic reactions. It is administered through auto-injectable devices, such as EpiPens®, and works by raising blood pressure, relaxing bronchial smooth muscle, and reducing swelling.
Step-by-step explanation:
Epinephrine is a medication used to treat severe allergic reactions, known as anaphylaxis. It is administered through auto-injectable devices, such as EpiPens®, which contain a preloaded dose of epinephrine. To administer the medication, the device is jammed against the thigh, either through clothing or on bare skin. Epinephrine works by raising blood pressure, relaxing bronchial smooth muscle, and reducing swelling, which helps counteract the effects of anaphylaxis.