Tylenol can lower the body's key antioxidant, glutathione, though this isn't seen on routine labs. But mechanistic data clinical proof, so we still need good trials. The Tylenolautism link isn't clear. Tylenol, Leucovorin, Glutathione, & Autism Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health The role of oxidative stress, inflammation and acetaminophen exposure from birth to early childhood in the induction of autism