Hepatitis A and B Vaccine
Twinrix is a combination vaccine that provides protection against both hepatitis A and hepatitis B viruses in a single injection. It is indicated for adults, adolescents, and children aged 1 year and older who require immunization against both diseases.
Twinrix is a combination vaccine that protects against hepatitis A and hepatitis B viruses.
Key facts at a glance
- RxNorm
- 153189
- Generic
- Twinrix
- 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.
Twinrix is used for active immunization against hepatitis A virus and hepatitis B virus infection in individuals aged 1 year and older who are at risk of exposure to both pathogens. It is commonly recommended for travelers to endemic regions, healthcare workers, and individuals with certain risk factors.
Twinrix contains inactivated hepatitis A virus and recombinant hepatitis B surface antigen. The vaccine stimulates the immune system to produce protective antibodies against both viruses without causing the diseases themselves.
Twinrix is administered intramuscularly, typically as a 3-dose series. Common side effects may include injection site reactions, headache, and fatigue. The vaccine is contraindicated in individuals with known hypersensitivity to any component. Patients should consult their healthcare provider for complete vaccination schedules and to discuss individual risk factors.
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 25, 2026. · Read our editorial policy