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Vials of COVID-19 vaccine

What's In The COVID-19 Vaccines?

What is in the COVID-19 vaccines? Joe Gastaldo, MD System Medical Director for Infectious Diseases breaks it down in this Fast Fact.  

The mRNA vaccines have four simple ingredients. There is a little bit of sugar, salt, messenger RNA, which all of our cells have, and a little bit of fat. The vaccines don’t have any preservatives. That’s why after the vial is opened, you only have a limited time to use the vaccine before you need to discard it.  

Want more answers to common COVID-19 questions? Check our Fast Facts page. 

Go to the COVID-19 vaccine scheduling landing page


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