Thimerosal, or sodium ethylmercurithiosalicylate, is a preservative used in low concentrations mainly in vaccines, cosmetics, ophthalmic and otolaryngolic medications, antitoxins, topical and ...

Neomycin is an antibiotic that interferes with bacterial protein synthesis by binding primarily to the 30S subunit of bacterial ribosomes. Many vaccines contain trace amounts of neomycin to ...