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Epinephrine auto injector

Epinephrine auto injector

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An epinephrine auto-injector (EAI) is a medical device used to deliver a single dose of Epinephrine, a medication used to treat life-threatening allergic reactions (anaphylaxis). Epinephrine auto-injectors are designed to be self-administered or administered by a caregiver in emergencies.

Epinephrine is a hormone naturally produced by the body and is also available in an injectable form. It works by stimulating the sympathetic nervous system, which helps to reduce the severity of an allergic reaction. In addition, Epinephrine helps to reduce swelling in the airways, allowing the person to breathe more easily. It also helps to raise blood pressure, which can help to prevent shock.

Epinephrine auto-injectors are typically prescribed to people at risk of anaphylaxis, such as those with a known allergy or a history of severe allergic reactions. Therefore, the person at risk of anaphylaxis must carry an Epinephrine auto-injector with them at all times.

Epinephrine auto-injectors come in two sizes: 0.15 mg and 0.3 mg. The 0.15 mg dose is typically recommended for adults, while the 0.3 mg dose is recommended for children and adolescents. The dose should be selected based on the person’s body weight and medical history.

Epinephrine auto-injectors are designed to be easy to use. The device is typically held against the outer thigh, and the user presses a button to inject the medication.

Epinephrine auto-injectors are pre-filled with Epinephrine and are disposable. After use, the device should be discarded, and a new one should be obtained. Epinephrine auto-injectors are a safe and effective way to treat anaphylaxis. However, it is important to note that an Epinephrine auto-injector should only be used in an emergency. It should not be used as a substitute for avoiding allergens or seeking medical care.

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  • American College of Allergy, Asthma & Immunology. (n.d.). Epinephrine Auto-Injectors. Retrieved from
  • U.S. Food and Drug Administration. (2018). Epinephrine Auto-Injectors. Retrieved from