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Are the ingredients in vaccines safe?

Question: 

Are the ingredients in vaccines safe? 

Answer: 
Vaccine ingredients have been carefully studied for a long time and are safe in the small amounts used. You may have heard or read that some vaccine ingredients are harmful, but this is true only at much higher amounts than those found in vaccines. Any substance, even water, can be harmful at a high dose. 
 
 
Date last reviewed: 
Tuesday, Feb 28, 2023