About hepatitis b virus hbsag surface antigen
Recombinant hepatitis B vaccine
Used for
- Prevention of hepatitis B infection.
Usual adult dose
Adults usually receive three doses at 0, 1, and 6 months.
Usual dose in children
Children usually receive three doses at 0, 1, and 6 months; schedules vary by age and local guidance.
Common side effects
- Injection-site pain, redness, or swelling
- Headache or tiredness
- Fever
- Nausea
Important warnings
- Do not use after a severe allergic reaction to a previous dose or vaccine ingredient.
- Vaccination may be postponed during a severe febrile illness.
- It does not treat existing hepatitis B infection.
Pregnancy
Vaccination can be given during pregnancy when protection is indicated; available evidence has not shown fetal harm.
Breastfeeding
Breastfeeding is not a reason to avoid vaccination.
Interactions
- Immune-suppressing medicines may reduce the vaccine response.
- Other vaccines can generally 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 It may be incomplete or out of date.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.