Mercury in Hepatitis B Vaccine

by: Paul G. King, PhD  President, FAME Systems

Lacking the ability to analyze the current vaccines for either their total mercury content (typically less than 0.000001 % [< 10 ppb]), the FDA website and the manufacturer's package inserts claim that all of the hepatitis-B-containing vaccines marketed in the USA (currently) do not contain any thimerosal in their manufacturing process.

In January 2007, the last trace-thimerosal-containing vaccines that contained hepatitis B as an active started being replaced by the then approved no-thimerosal hepatitis-B-containing vaccines.

Since the expiration dates for vaccines do not exceed 5 years and typically are 2 years, the last in-date hepatitis-B-containing vaccines that contained a trace (< 1 microgram of mercury per dose) should have expired in 2012 if not earlier with most doses of the trace-thimerosal-hepatitis-B-containing vaccines probably expiring in the 2009-2010 time frame. 

However, I cannot speak for hepatitis B vaccines imported into the USA from other countries (e.g., Mexico and Canada) and used to vaccinate residents in the USA.

DTaP-HepB-IPV Pediarix
(GlaxoSmithKline Biologicals)
Free Never contained more than a Trace of Thimerosal, approval date for thimerosal-free formulation 1/29/2007
Hepatitis B Recombivax HB
(Merck & Co, Inc.)
Free 08/27/99
Engerix B
(GlaxoSmithKline Biologicals)
Free 03/28/00, approval date for thimerosal-free formulation 1/30/2007
Hib/Hepatitis B combination
(Merck & Co, Inc.)
Free Never contained Thimerosal