Already had 1 or 2 vaccine doses?

Remember to
complete the series.

If you’ve started your TWINRIX® vaccination schedule, you will need 1 or 2 more injections to complete the series (1 month and 6 months after your first, according to the standard schedule). It’s very important to get all 3 vaccine doses. If you don’t, you may not be fully protected against hepatitis A and B.

Sign up for our "Complete the Series" reminder program.
Register now to receive email or text reminders of your TWINRIX® doses!

NOTE: If you are following the rapid schedule, you will need an additional 3 doses – 1 week, 3 weeks, and 1 year after your first, for a total of 4 injections.

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TWINRIX® vaccination schedules

Adult Vaccination Schedule
Age group Vaccine Dose #1 Vaccine Dose #2 Vaccine Dose #3 Vaccine Dose #4*
Standard schedule TWINRIX®
1.0 mL
Adults ≥19 years You choose
the date.
1 month after
the first dose.
6 months after
the first dose.
- - -
Rapid schedule TWINRIX®
1.0 mL
Adults ≥19 years You choose
the date.
1 week after
the first dose.
3 weeks after
the first dose.
12 months after
the first dose.

* A fourth booster dose is recommended 12 months after administration of the first injection only for rapid dosing schedule.

Pediatric Vaccination Schedule
Age group Vaccine Dose #1 Vaccine Dose #2 Vaccine Dose #3
Standard schedule TWINRIX® Junior
0.5 mL
1-18 years You choose
the date.
1 month after
the first dose.
6 months after
the first dose.
Alternate schedule TWINRIX®
1.0 mL
1-15 years You choose
the date.
6-12 months after
the first dose.
- - -

Talk to your healthcare
provider about TWINRIX®

TWINRIX® is the only dual hepatitis A and B vaccine.