“There’s been some confusion around the safety of using acetaminophen (commonly known as Tylenol or paracetamol) during pregnancy, with many people afraid to use Tylenol while pregnant in their first trimester.

While older studies suggested that taking the drug too often during pregnancy could increase your future child’s risks for developing autism or attention-deficit/hyperactivity disorder (ADHD), a recent 2024 study found that taking acetaminophen while pregnant doesn’t increase your child’s risk of these neurodevelopmental disorders.”

Cleveland Clinic (Is Tylenol Safe During Pregnancy?)