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Adjuvants in Vaccines

What are adjuvants?

Adjuvants are substances added to vaccines that allow them to work better by enhancing the immune response to the vaccine, decreasing the quantity of vaccine needed to gain protective immunity or both. Currently, only two types of adjuvants are approved for use in the United States: aluminum salts and monophoshoryl lipid A.

Reviewed by: Paul A. Offit, MD
Date: April 2013

Materials in this section are updated as new information and vaccines become available. The Vaccine Education Center staff regularly reviews materials for accuracy.

You should not consider the information in this site to be specific, professional medical advice for your personal health or for your family's personal health. You should not use it to replace any relationship with a physician or other qualified healthcare professional. For medical concerns, including decisions about vaccinations, medications and other treatments, you should always consult your physician or, in serious cases, seek immediate assistance from emergency personnel.


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