Using acetaminophen as directed during pregnancy does not increase a child's risk of autism, attention-deficit/hyperactivity disorder (ADHD) or intellectual disability, a major new review published Friday finds.

"It's as definitive as we're going to get," CBS News medical contributor Dr. Céline Gounder said of the new research, which found no connection between Tylenol and autism or ADHD.

Across several analyses, no links between exposure to acetaminophen (also known as paracetamol) during pregnancy and neurodevelopmental outcomes emerged, reported Asma Khalil, MD, MSc, of St. George's University Hospital and the University of London, and co-authors in Lancet Obstetrics, Gynaecology, & Women's Health.

Just months after US President Donald Trump warned women about taking paracetamol during pregnancy a new study finds there is no evidence linking the painkiller to autism in children.