Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health As a naturopathic doctor and a mom, Tylenol is a hard no in my house and I want to explain why. , , Acetaminophen (Tylenol) is processed through the liver, and in that process it can lower 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 & Why you should avoid REGULAR acetaminophen use for babies and pregnancy 3 Little Plums Association between acetaminophen metabolites and CYP2E1 DNA methylation level in neonate cord blood in the Boston Birth Cohort Clinical Epigenetics Springer Nature Link