http://articles.mercola.com/sites/articles/archive/2006/11/07/the-fdas-latest-health-harming-stance-on-mercury-part-two.aspxFederal health officials have refused to put new restrictions on the use of thimerosal, a mercury-based preservative, in vaccines and other medicines. The Coalition for Mercury-free Drugs petitioned the FDA for tighter restrictions in 2004, citing evidenceenCommunityServer 2008.5 SP1 (Build: 31106.3070)