An epinephrine auto-injector, commonly known as an EpiPen, is a medical device used to administer a dose of epinephrine (adrenaline) in case of an allergic reaction. Epinephrine is a hormone that helps constrict blood vessels and relax muscles in the airways, which can be life-saving in the event of anaphylaxis, a severe allergic reaction that can cause difficulty breathing, swelling, and even death.
EpiPens are available by prescription only and can be purchased at most pharmacies. To buy an EpiPen, you will need to see a doctor to get a prescription. The doctor will ask you about your medical history and current medications to make sure that an EpiPen is right for you. Once you have a prescription, you can take it to the pharmacy to purchase an EpiPen.