Since you were born in 2000, it is possible but not guaranteed that you received the Hepatitis B vaccine in childhood. In many countries, including India, Hepatitis B vaccination became part of the universal immunization program gradually in the early 2000s, so some children received it and some did not depending on the hospital or state program.
If you do not have vaccination records, the safest approach is to either check your Hepatitis B antibody level (Anti-HBs test) or simply take the vaccine again, as receiving it again is safe.
The vaccine used is commonly:
• Engerix‑B
• GeneVac‑B
Next Steps
For a 25-year-old adult, the standard Hepatitis B vaccination schedule is:
3-dose schedule:
• 1st dose – Day 0
• 2nd dose – After 1 month
• 3rd dose – After 6 months from first dose
Alternative option:
• You may do a blood test for Anti-HBs antibody.
• If the level is ≥10 mIU/mL, you are already protected and no vaccine is needed.
• If it is low or negative, then start the 3-dose vaccine schedule.
Health Tips
• Hepatitis B spreads through blood, sexual contact, and contaminated needles, so vaccination is strongly recommended for adults who are unsure of their status.
• The vaccine is very safe and provides long-term protection.
• Even if you were vaccinated earlier, taking the vaccine again does not cause harm if records are unavailable.
⸻
If you want, you can also share whether you have any previous vaccination record or blood test report, and I can guide you further about whether you should test first or directly start the vaccine through an online consultation.