Tylenol Avoid or Not to Avoid? Acetaminophen (Tylenol) can deplete glutathione, your body's most important detox antioxidant. This matters even more if your child has an MTHFR gene mutation, which Acetaminophen C8H9NO2 CID 1983 PubChem 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 & Paracetamol (Acetaminophen) and the Developing Brain