Epinephrine
Symjepi is a brand-name epinephrine injection used for emergency treatment of severe allergic reactions (anaphylaxis), including those caused by food, medications, insect stings, or other allergens. It is administered as a subcutaneous or intramuscular injection and is designed for immediate use when a life-threatening allergic reaction occurs.
Symjepi is an injectable epinephrine medication used for emergency treatment of severe allergic reactions (anaphylaxis).
Key facts at a glance
- RxNorm
- 1989113
- Generic
- Symjepi
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Emergency treatment of severe allergic reactions (anaphylaxis), including anaphylactic reactions to foods, medications, insect stings/bites, latex, and other allergens. Also used for anaphylaxis associated with idiopathic anaphylaxis or exercise-induced anaphylaxis.
Symjepi contains epinephrine (adrenaline), which works by stimulating alpha and beta adrenergic receptors. This causes vasoconstriction to reduce swelling and increase blood pressure, bronchodilation to improve breathing, and helps reverse other life-threatening symptoms of anaphylaxis.
Should be used immediately at the first signs of a severe allergic reaction. Patients should seek emergency medical care even after using Symjepi, as symptoms may recur. Side effects may include nervousness, anxiety, dizziness, and rapid heart rate. Not a substitute for emergency medical treatment.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy