
The brand name of the vaccine is Gardasil 9. Its active ingredients are virus-like particles from the L1 protein of various HPV types, specifically as a non-infectious recombinant 9-valent vaccine. Gardasil 9 is a sterile liquid suspension intended for intramuscular administration, with each 0.5-mL dose containing HPV L1 proteins and approximately 500 mcg of aluminum as an adjuvant. Key inactive ingredients include sodium chloride, L-histidine, polysorbate 80, sodium borate, a small amount of yeast protein, and water for injection.