Hepatitis A Vaccine
The Hepatitis A Vaccine (Inactivated) Strain Hm175 is a vaccine that provides protection against Hepatitis A virus infection, a contagious liver disease. It works by stimulating the immune system to produce antibodies against the virus without causing the actual disease. This vaccine is recommended for individuals at risk of Hepatitis A exposure, including travelers to endemic regions, people with certain medical conditions, and those with occupational risk factors.
A vaccine that prevents Hepatitis A infection by stimulating immune response against the Hepatitis A virus.
Key facts at a glance
- RxNorm
- 798361
- Generic
- Hepatitis A Vaccine (Inactivated) Strain Hm175
- Class
- unclassified
- Brands
- Twinrix, Havrix
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- injection, prefilled syringe
- 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 Hepatitis A virus infection in individuals aged 1 year and older. Recommended for travelers to countries with high Hepatitis A prevalence, individuals with chronic liver disease, men who have sex with men, people who use recreational drugs, and those working in high-risk occupations such as healthcare and childcare.
The vaccine contains inactivated (killed) Hepatitis A virus particles, specifically the Hm175 strain. When administered, it stimulates the immune system to produce protective antibodies against the Hepatitis A virus without causing infection. A complete series of two doses typically provides long-lasting immunity.
The vaccine is administered by intramuscular injection, typically as a two-dose series (6-18 months apart). Common side effects include soreness at the injection site, headache, and mild fever. The vaccine is contraindicated in individuals with severe allergic reactions to any component. It should not be used during acute febrile illness. Vaccination should be completed at least 2-4 weeks before travel to endemic areas for optimal protection.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
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 29, 2026. · Read our editorial policy