Measles virus live attenuated + Mumps virus live attenuated + Rubella virus live attenuated + Varicella-Zoster virus live attenuated (Oka strain) · Medicine question

How much phenylalanine does each dose of Priorix Tetra contain, and why is this relevant to people with phenylketonuria?

iatroX medicinesPublished 8 November 2026

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Each dose of Priorix Tetra contains 583 micrograms of phenylalanine, which may be harmful to people with phenylketonuria (PKU).

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Priorix Tetra powder and solvent for solution for injection in pre-filled syringeGlaxoSmithKline UK · emc · SmPC §4.4 Special warnings and precautions for use · Version 3Document updated 2 January 2026

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