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Influenza Vaccine

Published: July 26, 2026Updated: September 2, 2026

Arepanrix is a brand-name H1N1 influenza vaccine developed by GlaxoSmithKline. It was primarily used during the 2009 H1N1 pandemic to protect against swine flu infection.

Quick summary

Arepanrix is an inactivated H1N1 influenza vaccine used for immunization against pandemic flu.

Medically reviewed by WellAlly Editorial TeamLast reviewed September 2, 2026Editorial policy

Key facts at a glance

RxNorm
2743204
Generic
Arepanrix
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.

Prevention of H1N1 influenza (swine flu) infection, particularly during pandemic situations.

As an inactivated split virion vaccine, it contains non-infectious fragments of the H1N1 virus that stimulate the immune system to produce protective antibodies without causing illness.

Standard vaccine precautions apply, including screening for egg allergies and other contraindications. Administered by healthcare professionals. As a brand-name formulation, availability may be limited.

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.

Medical Disclaimer

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 September 2, 2026. · Read our editorial policy