Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors Hidden Risks of NSAIDs, Tylenol, Steroids & Opioids Denver Sports and Holistic Medicine Acetaminophen, also known as Tylenol, is used to help with pain & to reduce fever. However, taking too much acetaminophen can be harmful to the liver which filters out toxins & TylenolPartner 97 shows in under 5 months yeah my body feels it but we keep going thanks to @tylenol for aches and pains Yes there is good evidence that acetaminophen (the active ingredient in Tylenol) can deplete glutathione under certain conditions. But whether that matters depends on dose, duration, and individual factors. NSAIDs & Acetaminophen: ditki medical and biological sciences