Reaching for Tylenol when baby is fussy? Here's some information worth knowing. A baby's liver isn't fully mature until around 2 years old Meaning their ability to process certain substances is still When Good Drugs Go Bad: Acetaminophen Toxicity tl;dr pharmacy They told us Tylenol is safe. Pediatricians recommend them daily. But what if we've been missing the full story? Research shows that frequent use of acetaminophen (Tylenol) in babies and children Taking Tylenol? The Glutathione Connection Dr. Green Mom 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 metabolism