What's in the mRNA COVID-19 Vaccines?

Learn about the vaccine ingredients, including those that may be causing allergic reactions in some people.

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Health Tip of the Day What's in the mRNA COVID-19 Vaccines? The Pfizer-BioNTech and Moderna vaccines both use mRNA technology to deliver a small amount of genetic information to trigger the body's immune response. Here's a closer look at what that means as well as the other ingredients in the vaccines. READ NOW EDITOR'S PICK OF THE WEEK Boost Your Beneficial Bacteria Intake With These Probiotic Foods READ NOW  › READ THESE NEXT What Causes Inflammation In Your Body? READ NOW  › 5 Natural Ways to Fight Inflammation READ NOW  › Signs and Symptoms of an Iodine Deficiency READ NOW  › You are receiving this newsletter because you subscribed to the Health Tip of the Day newsletter. If you wish to unsubscribe, please click here. A DOTDASH BRAND 28 Liberty Street, 7th Floor, New York, NY 10005 © 2021 Verywellhealth.com - All rights reserved. Privacy Policy