The parent compounds of acetaminophen (US market in 1955 in the US as Tylenol and other products) were first discovered in 1886 (acetanilide) and 1887 (phenacetin). These were the earliest synthetic fever Silymarin prevents acetaminophen induced hepatotoxicity via up regulation of the glutathione conjugation capacity in mice ScienceDirect Tylenol (acetaminophen) is one of the most commonly used painkillers. It is safe for kids, during pregnancy, and while breastfeeding. However, just because it is safe, doesn't mean that it Acetaminophen Glutathione d3 Disodium Salt (~90%) Tylenol's Impact on Glutathione and Liver Damage