Utilizing acetaminophen as directed throughout being pregnant doesn’t improve a baby’s threat of autism, attention-deficit/hyperactivity dysfunction (ADHD) or mental incapacity, a significant new evaluate printed Friday finds.
Acetaminophen, often known as paracetamol and by the model identify Tylenol, is among the mostly used drugs in being pregnant, with medical doctors usually recommending it as the primary possibility for ache or fever, however in restricted use.
Earlier research have produced combined outcomes, with some suggesting the drug could also be related to a increase within the threat of autism or ADHD in kids, leaving some pregnant individuals uncertain of how secure it’s.
Within the new meta-analysis, printed within the journal The Lancet Obstetrics, Gynecology & Girls’s Well being, researchers reviewed outcomes from about 60 research.
They discovered no hyperlink to developmental problems in kids when expectant individuals used acetaminophen in keeping with the label, in one of the vital complete evaluations of the proof to this point.
Generic acetaminophen on a countertop.
Steve Heap/Adobe Inventory
“The clearest takeaway is that the best-quality proof doesn’t assist a causal hyperlink between taking paracetamol throughout being pregnant and autism or ADHD in kids,” Dr. Asma Khalil, research co-author and professor of obstetrics and maternal fetal drugs at St. George’s Hospital in London, advised ABC Information.
“Pregnant ladies ought to really feel reassured that paracetamol stays the advisable first-line possibility for ache or fever in being pregnant when used as directed,” she added.
In September, President Donald Trump warned that acetaminophen use in being pregnant was “related to a really elevated threat of autism” and the president suggested pregnant ladies, “Do not take Tylenol.”
The president has since repeated that declare on social media and has prompt that younger kids, together with infants, should not be given the drug, with out offering proof to again up the assertion.
The Meals and Drug Administration additionally launched a observe on the time to medical doctors a few attainable hyperlink between acetaminophen throughout being pregnant and autism. The observe included language that there was no proof that Tylenol causes autism, and the affiliation is an ongoing space of scientific debate.
In an announcement to ABC Information, HHS mentioned, “many specialists have expressed concern of the usage of acetaminophen throughout being pregnant.”
Main medical teams reacted strongly, expressing concern that pregnant ladies could also be discouraged from utilizing acetaminophen even when they might profit.
Kenvue, the maker of Tylenol, mentioned on the time saying it believes that analysis exhibits that acetaminophen doesn’t trigger autism.
In a brand new assertion to ABC Information, Kenvue mentioned it could evaluate the brand new evaluation upon publication.
“Our view of the present science stays the identical: we imagine impartial, sound science exhibits Tylenol is secure and taking acetaminophen doesn’t trigger autism,” the assertion learn.
President Donald Trump listens as Well being and Human Providers Secretary Robert F. Kennedy Jr. solutions questions after delivering an announcement on medical and scientific findings on autism causation in kids on the White Home, September 22, 2025 in Washington.
Andrew Harnik/Getty Photographs
The brand new evaluate centered on sibling-comparison research, which take a look at siblings born to the identical mom when one being pregnant concerned taking acetaminophen and one other didn’t. As a result of siblings share genetics and household surroundings, this design helps separate the results of the drug from household background.
In sibling-comparison analyses, publicity to acetaminophen throughout being pregnant was not related to autism spectrum dysfunction, ADHD or another mental incapacity. This conclusion held up even in research with greater than 5 years of follow-up, the authors mentioned.
The authors mentioned the evaluate could assist clarify why earlier observational research appeared to point out a attainable hyperlink between acetaminophen use in being pregnant and developmental problems.
Individuals don’t take acetaminophen randomly however for signs similar to fever, an infection, irritation or ache, the authors mentioned. These signs may additionally be linked to the mind growth of a fetus, making it attainable to confuse the results of the underlying situation with results of the medicine.
Jessica B. Steier, who leads the science communication group Unbiased Science and was not concerned within the evaluate, advised ABC Information that not treating signs, similar to fever, may very well be dangerous to each the pregnant individual and the fetus.
“Untreated fever has documented associations with critical being pregnant and fetal dangers,” she defined. “The choice ache drugs — NSAIDs, opioids — carry their very own being pregnant dangers. Acetaminophen stays the most secure possibility when medicine is required.”
Steier added that research linking acetaminophen use in being pregnant to autism or different circumstances are weak to misinterpretation and may be persuasive, particularly when shared on social media.
An HHS official advised ABC Information that the brand new evaluation “doesn’t resolve an essential public well being query; it sidesteps it. By excluding the overwhelming majority of related proof, privileging one research design identified to bias outcomes towards the null, and misrepresenting statistical energy, the authors engineer a discovering reasonably than consider causality.”
Khalil mentioned sufferers ought to use the bottom efficient dose for the shortest period of time and to hunt medical recommendation if signs persist, are extreme or recur — particularly fever.
The authors mentioned there are limitations to the evaluate, together with that few research utilizing sibling-based designs, which prevented the crew from accounting for different variables that would affect the usage of painkillers or result in neurodevelopmental problems.
Nonetheless, they add the findings of the brand new evaluate align with the steering of a number of skilled medical organizations, together with the American Faculty of Obstetricians and Gynecologists (ACOG).
Bottles of generic acetaminophen are seen in a pharmacy in Houston, September 23, 2025.
Ronaldo Schemidt/AFP by way of Getty Photographs
ACOG advises utilizing acetaminophen when wanted, following the label directions, in search of medical steering when acceptable and taking note of the signs that immediate the drug’s use.Â
A recurring or excessive fever, extreme ache or signs that are not enhancing throughout being pregnant can sign an underlying drawback that wants medical consideration, in keeping with ACOG.Â
“It is all the time wise to make use of paracetamol appropriately in being pregnant: the bottom efficient dose for the shortest time, and keep away from pointless extended use with out medical evaluate,” Khalil mentioned.Â
Radhika Malhotra, MD is an inner medicine-preventive drugs resident at Rutgers New Jersey Medical Faculty and a member of the ABC Information Medical Unit.
ABC Information’ Youri Benadjaoud contributed to this report.
