The FDA is signaling that perhaps immediate treatment with acetaminophen is less clearly needed for a low grade fever, especially in pregnancy, unless theres a stronger indication for it., Safer Glutathione, Tylenol, and Vaccines: What Parents Need to Know Lotus Homeopathy, Inc. Myth busting, Acetaminophen version. "Avoid Acetaminophen (Tylenol) because it causes glutathione depletion". Truth?? As a pediatrician and ER doctor and as moms we're often asked about this. And we understand why: Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors