Q: What is Thimerosal? A: Thimerosal is a mercury-based preservative used in vaccines and other medicines. Developed by the pharmaceutical company Eli Lilly in 1928, over the years Thimerosal has been used in a variety of medical products, including topical antiseptics, nasal sprays, eye drops, immune globulin products, and vaccines. Q: What is the problem … Continue reading Mercury is Not Safe in Any Form: Debunking the Myths About Thimerosal “Safety”