Today's vaccines use only the ingredients needed so they work and are safe.
Spotlight on Formaldehyde: pronounced fr-mal-duh-hide
Why is Formaldehyde Used?
Formaldehyde is used to kill the viruses and bacteria used to make vaccines, so that they can’t make people sick.
Is it safe to use?
The amount of formaldehyde used in vaccines is small and “watered down.” Your body makes more formaldehyde naturally than there is in a vaccine.
Before they are approved for use in the United States, vaccines are tested to make sure they work, and are safe. After approval, the CDC and the FDA keep tracking the vaccine’s safety.
Learn more at: www.cdc.gov/vaccines/vac-gen/additives.htm
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