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Synflorix™ vaccine

GlaxoSmithKline · Phase 3 active Biologic

Synflorix is a pneumococcal conjugate vaccine that stimulates the immune system to produce antibodies against 10 serotypes of Streptococcus pneumoniae.

Synflorix is a pneumococcal conjugate vaccine that stimulates the immune system to produce antibodies against 10 serotypes of Streptococcus pneumoniae. Used for Prevention of invasive pneumococcal disease in infants and children, Prevention of pneumococcal otitis media in infants and children, Prevention of pneumococcal pneumonia in infants and children.

At a glance

Generic nameSynflorix™ vaccine
SponsorGlaxoSmithKline
Drug classPneumococcal conjugate vaccine
TargetStreptococcus pneumoniae polysaccharide antigens (serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, 23F)
ModalityBiologic
Therapeutic areaImmunology / Infectious Disease
PhasePhase 3

Mechanism of action

The vaccine contains polysaccharide antigens from 10 pneumococcal serotypes conjugated to a protein carrier (diphtheria toxoid), which enhances immunogenicity and T-cell dependent responses. This conjugation allows the vaccine to elicit both humoral and cellular immune responses, providing protection against invasive pneumococcal disease, pneumonia, and otitis media caused by these serotypes.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results