Tylenol in pregnancy is safe. Autism is not caused by acetaminophen.

Current scientific evidence on the safety of acetaminophen use during pregnancy and its relationship to autism spectrum disorder (ASD) is mixed but leans toward no definitive causal connection. Several large-scale observational studies have found associations between prenatal acetaminophen exposure and increased risks of neurodevelopmental disorders including autism and ADHD.hub.jhu.eduhub.jhu.eduTaking Tylenol during pregnancy associated with elevated risks for autism, ADHDhsph.harvard.eduhsph.harvard.eduUsing acetaminophen during pregnancy may increase children’s autism and ADHD...+1 more However, these studies emphasize that association does not imply causation and that confounding factors may explain the observed links.

Leading public health organizations and research groups, including Autism Speaks and PBS News, state that no study has conclusively demonstrated that acetaminophen causes autism.pbs.orgpbs.orgResearch doesn’t show using Tylenol during pregnancy causes autism. Here are 5...autismspeaks.orgautismspeaks.orgResearch shows no causal link between Tylenol and autism Experts caution that more research is needed to clarify these associations. Recent news coverage around political statements linking Tylenol to autism highlights the lack of conclusive evidence and the scientific community's caution against drawing firm conclusions.+4 more

Regarding safety, acetaminophen remains widely recommended as a pain reliever during pregnancy when used as directed, given its long history of use and lack of proven harm in controlled studies. The uncertainty lies primarily in observational data suggesting potential risks but without clear mechanistic or causal proof.

In summary, while some studies raise concerns about possible increased risks of autism with prenatal acetaminophen exposure, the overall consensus from authoritative sources is that acetaminophen is considered safe in pregnancy and does not cause autism based on current evidence.