Pfizer vaccine side effect (( full information))

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Pfizer vaccine side effect Safety Data Summary

  • Pfizer vaccine side effect vaccines have passed – and will continue to be – in the U.S. The most thorough security monitoring in history. Evidence from the millions of COVID-19 vaccines already administered in the United States and the billions of vaccines administered globally shows that they are safe and effective.
  • Side effects that occur within 7 days of vaccination are common but are mostly mild. Some people have side effects that affect their ability to perform daily activities.
  • Whole-body side effects (such as fever, chills, tiredness, and headache) are more common after the second dose of vaccine.
  • Serious allergic reactions to vaccines are rare but can occur.
  • There is a rare risk of myocarditis and pericarditis associated with mRNA COVID-19 vaccination, mostly in men 12 to 39 years of age. The risk of rarefaction can be further reduced with a longer interval between the first and second doses. Learn more about the timing of your second dose.

What is pfizer vaccine?

The Pfizer-BioNtech COVID-19 vaccine also contains a harmless fragment of messenger RNA (mRNA). COVID-19 mRNA teaches cells in the body how to create an immune response to the virus that causes COVID-19. This response helps protect you from getting sick with COVID-19 in the future.

How well does pfizer vaccine work?

  • Vaccines reduce the risk of COVID-19, including the risk of serious illness and death, in fully vaccinated people.
  • COVID-19 vaccines are effective, but studies have shown that pfizer vaccine safety declines over time—especially with the Omicron version. Learn more about getting a booster shot to increase or restore protection against COVID-19.
  • All FDA-approved or authorized COVID-19 vaccines provide adequate protection against COVID-19 hospitalization and death.
  • CDC will continue to provide updates as we learn more.

Pfizer-BioNtech COVID-19 Vaccine Ingredients

All COVID-19 vaccine ingredients are safe. Almost all of the ingredients in COVID-19 vaccines are ingredients found in many foods – fats, sugars and salt. The Pfizer-BioNtech COVID-19 vaccine also contains a harmless fragment of messenger RNA (mRNA). COVID-19 mRNA teaches cells in the body how to create an immune response to the virus that causes COVID-19. This response helps protect you from getting sick with COVID-19 in the future. After the body produces an immune response, it discards all ingredients of the vaccine, just as it would discard any substances the cells no longer need. This process is a part of the normal functioning of the body.

All COVID-19 vaccines are manufactured with as few ingredients as possible and with very small amounts of each ingredient. Each ingredient in the vaccine serves a specific purpose as seen in the table below.

Pfizer-BioNtech has updated the formulation of the Pfizer-BioNTech COVID-19 vaccine. The updated formulation contains the same active ingredients as the previous formulation but uses different stabilizers (materials that help stabilize the vaccine molecules while the vaccine is manufactured, frozen, shipped, and stored). These changes allow for easier shipping and longer storage of vaccines at refrigerator temperatures. This will help improve access to vaccines for those who need them and reduce waste.

The previous formulation is no longer being distributed for people 12 years of age and older, and once the dosage of that formulation is used, only the updated formulation will be available. Both formulations can be used interchangeably without any safety or effectiveness concerns. If you are concerned about any of the ingredients, check with your healthcare provider which formulation they contain.

Ingredients in the original Pfizer-BioNTech COVID-19 Vaccine for People 12 Years of Age and Older.

The original Pfizer-BioNTech COVID-19 vaccine for people 12 years of age and older contains the following ingredients:

Messenger Ribonucleic Acid (mRNA):
Nucleoside-modified mRNA encoding the viral spike (S) glycoprotein of SARS-CoV-2.

purpose
Provides instructions that the body uses to make a harmless piece of protein from the virus that causes COVID-19. This protein causes an immune response that helps protect the body from getting sick with COVID-19 in the future.

Lipids (fats):

  • 2[(polyethylene glycol (PEG))-2000]-N,N-ditetradecylacetamide
  • 1,2-distearoyl-sn-glycero-3-phosphocholine
  • Cholesterol (plant derived)
  • (4-hydroxybutyl)azanediyl)bis(hexane-6,1-diol)bis(2-hexyldecanoate)

purpose

Work together to help mRNA enter cells.

Salt and Sugar:

Dibasic Sodium Phosphate Dihydrate
monobasic potassium phosphate
Potassium chloride (common edible salt)
Sodium Chloride (Basic Table Salt)
Sucrose (Basic Table Sugar)

purpose

Work together to help keep vaccine molecules stable while the vaccine is manufactured, frozen, shipped, and stored until it is ready to be given to the vaccine recipient.

Ingredients in the Pfizer-BioNTech COVID-19 Vaccine for Children and Updated Formulation for People 12 Years of Age and Older.

The updated formulations of Pfizer-BioEntech COVID-19 Vaccine for People 5 to 11 Years of Age and 12 Years of Age and Older, Pfizer-BioNTech COVID-19 Vaccine, contain the following ingredients. While the ingredients are the same for all ages, people 12 years of age and older get a higher dosage than children ages 5 to 11.

Messenger Ribonucleic Acid (mRNA):
Nucleoside-modified mRNA encoding the viral spike (S) glycoprotein of SARS-CoV-2

purpose
Provides instructions that the body uses to make a harmless piece of protein from the virus that causes COVID-19. This protein causes an immune response that helps protect the body from getting sick with COVID-19 in the future.

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