Overview
EpiPen Jr is approved by the U.S. Food and Drug Administration (FDA) for the emergency treatment of severe allergic reactions (type I), including anaphylaxis. It is intended for children who are at risk for or have a history of anaphylaxis due to triggers such as food. It should be used immediately at the first signs of a serious allergic reaction and followed by immediate medical attention. EpiPen Jr is also known by its drug name, epinephrine.

EpiPen Jr is an adrenergic agonist. It works by narrowing blood vessels and opening airways in the lungs, which can reverse severe low blood pressure, wheezing, skin itching, hives, and other symptoms of anaphylaxis.

How do I take it?
Prescribing information states that EpiPen Jr is administered as a single-dose intramuscular (into a muscle) or subcutaneous (under the skin) injection into the outer thigh. It can be injected through clothing if necessary. EpiPen Jr is intended for children who weigh between 15 and 30 kilograms (33 to 66 pounds). EpiPen Jr should be taken exactly as prescribed by a healthcare provider.

Side effects
Common side effects of EpiPen Jr include anxiety, apprehensiveness, restlessness, tremor, weakness, dizziness, sweating, palpitations (irregular or fast heartbeat), pallor (pale skin), nausea and vomiting, headache, and/or respiratory difficulties.

Rare but serious side effects may include serious skin and soft tissue infections, ventricular arrhythmias (irregular heartbeats in the lower chambers), and worsening of existing heart conditions such as angina pectoris (chest pain). Elderly individuals may be at greater risk of experiencing adverse effects.

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Label: Epipen — Epinephrine Injection; Epipen Jr — Epinephrine Injection — DailyMed