Replied by Carolyn (Canterbury) on 11/29/2022
YES!! The ingredients in a tetanus shot - YIKES!!
Sodium phosphate, peptone, bovine extract (U.S. sourced), formaldehyde, ammonium sulfate, aluminum potassium sulfate, thimerosal (trace), gelatin, polysorbate 80 (Tween 80), modified Mueller and Miller medium, and modified Stainer-Scholte medium. Thimerosal has been linked to permanent brain damage even in small doses.