Last reviewed 2026-04-23 · How we verify

GCFLU Pre-filled Syringe inj.

GCFLU is a pre-filled syringe formulation of an inactivated influenza vaccine that stimulates the immune system to produce antibodies against seasonal influenza virus strains.

GCFLU is a pre-filled syringe formulation of an inactivated influenza vaccine that stimulates the immune system to produce antibodies against seasonal influenza virus strains. Used for Seasonal influenza prevention in adults and children.

At a glance

Mechanism of action

The vaccine contains inactivated influenza virus antigens that trigger both humoral and cellular immune responses, enabling the body to recognize and neutralize circulating influenza viruses. By priming the immune system against prevalent seasonal flu strains, it reduces infection risk and severity in vaccinated individuals.

Approved indications

• Seasonal influenza prevention in adults and children

Common side effects

• Injection site pain or erythema
• Myalgia
• Headache
• Fever
• Fatigue

Key clinical trials

• A Study to Evaluate the Safety and Efficacy(Immunogenicity) of GC3114 in Elderly Healthy Subjects (PHASE2)
• A Study to Evaluate the Safety and Efficacy(Immunogenicity) of GC3114 in Healthy Adults (PHASE1)
• A Study to Evaluate the Efficacy and Safety of GC3110A in Healthy Infants From 6 Months to 35 Months of Age (PHASE3)
• A Study to Evaluate the Efficacy and Safety of 'GC3110A(QIV)' in Healthy Children (PHASE3)
• Evaluate Safety of GCFLU® Administered Intramuscularly in Healthy Vietnamese Volunteer Aged From 3 Years Old (PHASE4)

Primary sources

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