Pediarix Dosage

The standard recommended dosage of Pediarix is three injections six to eight weeks apart, ideally starting at two months of age. The first injection can be given as early as six weeks of age; the last dose should not be given before six months of age. Your child's healthcare provider may recommend a slightly different dosing schedule, depending on your child's vaccination history.

Pediarix Dosage: An Introduction

There is only one standard dosage for Pediarix® (DTaP, hepatitis B vaccine, and inactivated polio vaccine), although there may be some variability in the exact vaccination schedule.
 

Ideal Pediarix Vaccine Schedule

The ideal, standard Pediarix dosage is three doses (each 0.5 mL injected into a muscle) six to eight weeks apart, starting at two months of age. The first dose could be given as early as six weeks of age, if desired. The last one should not be given before six months of age.
 
Due to differences among the vaccination schedules for the various components of this vaccine, the three standard dosages of Pediarix do not fully complete the recommended vaccine schedules for DTaP and polio. Therefore, children will typically need a separate inactivated polio vaccine dose (usually at four to six years of age) and two separate DTaP boosters (usually at 15 to 18 months and four to six years of age).
 

Other Pediarix Vaccine Schedules

Your child's healthcare provider may recommend a slightly different vaccination schedule, particularly if your child has already had one or more doses of any of the individual components of Pediarix. This prevents giving too much of any of the individual components.
 
There is one exception, though. Infants who already received one hepatitis B vaccine dosage (given at birth) can receive the regular three dosages of Pediarix, even though this means getting four doses of the hepatitis B vaccine (instead of the recommended three). This is not expected to cause any problems.
 
If you choose a delayed vaccination schedule (or your child's vaccines are interrupted for any reason), there is no reason to "start over," regardless of how much time has elapsed. Pediarix can be used to "catch up" children as old as seven years of age.
 
 
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Pediarix Vaccine Information

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