Hepatitis A Vaccine
Vaqta is a brand-name inactivated hepatitis A vaccine manufactured by Merck used to prevent hepatitis A virus infection. It is indicated for individuals 12 months of age and older and is administered as an intramuscular injection, typically in a two-dose series for long-lasting protection.
Vaqta is a Merck hepatitis A vaccine that protects against hepatitis A virus infection in people 12 months and older.
Key facts at a glance
- RxNorm
- 115386
- Generic
- Vaqta
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
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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 hepatitis A virus (HAV) infection in individuals 12 months of age and older. Recommended for travelers to endemic regions, individuals with chronic liver disease, and those at increased risk of exposure.
Vaqta is an inactivated (killed) virus vaccine containing hepatitis A antigen that stimulates the immune system to produce protective antibodies against the hepatitis A virus without causing the disease.
Administered as a two-dose series (second dose given 6-18 months after the first) for durable protection. Administered intramuscularly by a healthcare professional. Not recommended for individuals with known hypersensitivity to any vaccine component. Common side effects include injection site pain, headache, and mild fever.
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