Public health authorities said that 15,769 adverse reactions had been reported among those who received the vaccines by Thursday morning.
Meanwhile, a total of 503,673 doses have been wasted in the rollout, according to the Polish health ministry.
As of Thursday, Poland had injected over 20 million first doses of COVID-19 vaccines, while more than 19.77 million people had been fully inoculated, health ministry data showed.
The tally includes two-dose vaccines from Pfizer-BioNTech, Moderna and AstraZeneca as well as Johnson & Johnson's one-shot vaccine.
Poland on Thursday reported 5,592 new coronavirus infections and 46 more deaths related to COVID-19, bringing the country's total number of cases during the pandemic to 2,956,207 and fatalities to 76,300.
Prime Minister Mateusz Morawiecki announced on Wednesday that third doses of the COVID-19 vaccine would be available to all adults "over the next few weeks."
Poland's government last month recommended a booster dose of the COVID-19 vaccine for healthcare workers and people over 50.
Deputy Health Minister Waldemar Kraska told reporters at the time that the booster shot would be administered at least six months after the second shot.
In late August, people with compromised immune systems were advised to receive a third dose of the vaccine.
By Thursday, a total of 536,775 booster shots had been administered, while 174,932 people with immunity problems had received a third vaccine dose, government data showed.
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Source: IAR, PAP, gov.pl