Acetaminophen, better known as Tylenol, is the most commonly used medication for pain and fever during pregnancy.
Now, a new study finds pregnant women who take it may be exposing their unborn baby to an increased risk of behavioral problems, like attention deficit/hyperactivity disorder, and hyperkinetic disorders like Tourette Syndrome.
UCLA researchers studied more than 64,000 children and their mothers. More than half of the mothers reported using acetaminophen while pregnant.
Results show the use of acetaminophen during pregnancy appeared to be associated with a higher risk of hyperkinetic disorders, or of having ADHD-like behaviors at age 7.
The study showed a stronger likelihood of behavior problems in children when women used acetaminophen in more than one trimester. Results of the study are in the Journal Pediatrics.