About hepatitis b virus surface antigen
Recombinant hepatitis B vaccine
Used for
- Prevention of hepatitis B infection.
Usual adult dose
Usually 20 mcg intramuscularly at 0, 1, and 6 months; schedules vary by risk and local guidance.
Usual dose in children
Usually 10 mcg intramuscularly at 0, 1, and 6 months; infant schedules may vary.
Common side effects
- Injection-site pain, redness, or swelling
- Headache
- Fatigue or irritability
- Fever
Important warnings
- Do not use after a severe allergic reaction to a previous dose or vaccine component.
- Vaccination may need to be delayed during significant acute illness.
- It does not treat existing hepatitis B infection.
- People with weakened immunity may respond less well.
Pregnancy
Generally considered safe when vaccination is indicated; pregnancy alone is not a reason to avoid it.
Breastfeeding
Generally compatible with breastfeeding.
Interactions
- Immune-suppressing medicines may reduce the vaccine response.
- 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 It may be incomplete or out of date.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.