In the latest Vaccine Smarts column by UTMB’s Dr. Richard Rupp and Bridget Hawkins: Adding aluminum makes it possible for a lower dose of vaccine to be used and fewer doses of the vaccine are required. There is only a tiny amount of aluminum in vaccines. An aluminum-containing antacid tablet contains 1,000 times more aluminum than a vaccine. Aluminum used in vaccines has been well studied and there is no evidence that it poses any risk.