The real danger of Tylenol isn't autism it's liver failure. Acetaminophen, the active ingredient in Tylenol and many cold and flu medications, is one of the leading causes of liver failure Acetaminophen induces liver injury and depletes glutathione in mice brain: Prevention by Moringa oleifera extract ScienceDirect Your livers unsung hero: Glutathione , Lets talk about what really happens when you take Tylenol (acetaminophen)., Your liver breaks down acetaminophen through several pathways. One pathway creates 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: Use Only as Directed ProPublica