About vaccine hepatitis a virus antigen
Inactivated hepatitis A vaccine
Used for
- Prevention of hepatitis A infection
Usual adult dose
Adults receive 1 mL intramuscularly, followed by a second dose 6–18 months later.
Usual dose in children
For ages 12 months–18 years: 0.5 mL intramuscularly, followed by a second dose 6–18 months later.
Common side effects
- Sore or red injection site
- Headache
- Fatigue
- Fever
Important warnings
- Do not give to anyone with severe allergy to a previous dose or vaccine component.
- Vaccination may not protect people already infected or those with weakened immunity.
- Use only when benefits outweigh risks during a serious acute illness.
Pregnancy
Limited data are available; use during pregnancy when hepatitis A protection is needed.
Breastfeeding
It is unknown whether vaccine components enter breast milk; vaccination may be considered when needed.
Interactions
- Immune globulin can reduce the immune response; separate administration when possible.
- Immunosuppressive treatments may reduce vaccine effectiveness.
- May be given with other vaccines at separate injection sites.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.