About hepatitis b surface antigen
Recombinant hepatitis B vaccine
Used for
- Prevents hepatitis B infection in adults and children.
- Helps prevent infection after exposure, as part of a vaccination schedule.
Usual adult dose
Usually 1 mL by injection at 0, 1, and 6 months; schedules may vary.
Usual dose in children
Usually 0.5 mL by injection at 0, 1, and 6 months; schedules vary by age and risk.
Common side effects
- Injection-site pain, redness, or swelling
- Headache
- Tiredness
- Fever or nausea
Important warnings
- Do not use after a severe allergic reaction to a previous dose or vaccine ingredient.
- It does not treat existing hepatitis B infection.
- People with weakened immune systems may have a reduced response.
- A clinician may recommend testing or additional doses for some higher-risk people.
Pregnancy
Generally considered safe when vaccination is indicated; available data have not identified a pregnancy-related risk.
Breastfeeding
Vaccination is generally compatible with breastfeeding.
Interactions
- Immune-suppressing medicines may reduce the vaccine response.
- Other vaccines may usually be given at the same visit, 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 It may be incomplete or out of date.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.