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Quadrivalent Influenza Vaccine, No Preservative

Sanofi Pasteur, a Sanofi Company · Phase 3 active Biologic

Quadrivalent Influenza Vaccine, No Preservative is a Inactivated influenza vaccine Biologic drug developed by Sanofi Pasteur, a Sanofi Company. It is currently in Phase 3 development for Seasonal influenza prevention in adults and children.

This vaccine stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection.

This vaccine stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection. Used for Seasonal influenza prevention in adults and children.

At a glance

Generic nameQuadrivalent Influenza Vaccine, No Preservative
SponsorSanofi Pasteur, a Sanofi Company
Drug classInactivated influenza vaccine
ModalityBiologic
Therapeutic areaImmunology
PhasePhase 3

Mechanism of action

The quadrivalent influenza vaccine contains inactivated viral antigens from two influenza A strains (H1N1 and H3N2) and two influenza B strains. When administered, it triggers both humoral and cellular immune responses, leading to the production of strain-specific antibodies and memory B cells that recognize and neutralize circulating influenza viruses during the flu season.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

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

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Frequently asked questions about Quadrivalent Influenza Vaccine, No Preservative

What is Quadrivalent Influenza Vaccine, No Preservative?

Quadrivalent Influenza Vaccine, No Preservative is a Inactivated influenza vaccine drug developed by Sanofi Pasteur, a Sanofi Company, indicated for Seasonal influenza prevention in adults and children.

How does Quadrivalent Influenza Vaccine, No Preservative work?

This vaccine stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection.

What is Quadrivalent Influenza Vaccine, No Preservative used for?

Quadrivalent Influenza Vaccine, No Preservative is indicated for Seasonal influenza prevention in adults and children.

Who makes Quadrivalent Influenza Vaccine, No Preservative?

Quadrivalent Influenza Vaccine, No Preservative is developed by Sanofi Pasteur, a Sanofi Company (see full Sanofi Pasteur, a Sanofi Company pipeline at /company/sanofi).

What drug class is Quadrivalent Influenza Vaccine, No Preservative in?

Quadrivalent Influenza Vaccine, No Preservative belongs to the Inactivated influenza vaccine class. See all Inactivated influenza vaccine drugs at /class/inactivated-influenza-vaccine.

What development phase is Quadrivalent Influenza Vaccine, No Preservative in?

Quadrivalent Influenza Vaccine, No Preservative is in Phase 3.

What are the side effects of Quadrivalent Influenza Vaccine, No Preservative?

Common side effects of Quadrivalent Influenza Vaccine, No Preservative include Injection site soreness or erythema, Myalgia, Headache, Fatigue, Low-grade fever.

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