The country received 193,050 doses of Pfizer's COVID-19 vaccine on Monday.
The vaccines are from COVAX, a global initiative led by the World Health Organization, Gavi, and the Coalition for Epidemic Preparedness Innovations, which seeks member countries' equitable access to vaccines.
Earlier, Health Secretary Francisco Duque III said the vaccines would be distributed in Metro Manila and other major cities which can handle the product's storage requirements of -70 to -80°C.
Vaccine czar Carlito Galvez, Jr. said a total of 1.3 million doses of the vaccines developed by the American firm may arrive in the country this month.