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This is AI generated summarization, which may have errors. For context, always refer to the full article.
Claim: A Facebook post claims to contain the list of side effects of the Pfizer-BioNTech COVID-19 vaccine.
Rating: FALSE
Why we fact-checked this: The Facebook post containing the claim has 317 shares, 20 comments, and 34 reactions as of writing.
The post claims that Pfizer just released a list of side effects of its COVID-19 vaccine. It then proceeds to enumerate over 40 alleged side effects, including heart failure, liver damage, and pneumonia, among others.
The facts: The alleged list of side effects documented in the post is different from the official list of risks and side effects associated with the vaccine.
According to the medical information published by Pfizer on its website, the vaccine’s side effects include the following:
Severe allergic reactions
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Non-severe allergic reactions such as rash, itching, hives, or swelling of the face
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Myocarditis (inflammation of the heart muscle)
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Pericarditis (inflammation of the lining outside the heart)
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Injection site reactions: pain, swelling, redness, arm pain
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General side effects: tiredness, headache, muscle pain, chills, joint pain, fever, nausea, feeling unwell, swollen lymph nodes (lymphadenopathy), decreased appetite, diarrhea, vomiting, dizziness
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Fainting in association with injection of the vaccine
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Meanwhile, its risks include severe allergic reactions that might manifest in difficulty breathing, swelling of the face and throat, fast heartbeat, bad rash all over the body, dizziness, and weakness.
Pfizer also listed myocarditis (inflammation of the heart muscle), and pericarditis (inflammation of the lining outside the heart) as possible risks, as these occurred in some people who received the vaccine. Symptoms that might manifest include chest pain, shortness of breath, and feelings of having a fluttering or pounding heart.
Debunked: Other fact-checking organizations such as Science Feedback, Lead Stories, and The Dispatch have debunked similar claims that circulated since January 2025.
Reuters and AFP have also fact-checked similar claims that circulated in 2022 and 2023. – Ailla Dela Cruz/Rappler.com
Keep us aware of suspicious Facebook pages, groups, accounts, websites, articles, or photos in your network by contacting us at factcheck@rappler.com. Let us battle disinformation one Fact Check at a time.
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