A new study released Feb. 24 says there is a higher chance that children of mothers that took the common pain medicine acetaminophen sold under the brand names Tylenol and Excedrin during their pregnancy will be prescribed drugs to treat ADHD symptoms. The study looked at more than 64,000 children and mothers in Denmark between 1996 and 2002.

“Medication that we thought was fairly safe to use during pregnancy for pain relief actually might increase the chance of a child to later develop ADHD,” study co-author Dr. Beate Ritz, vice chair of the epidemiology department at UCLA, told CBS News’ Teri Okita.

Quoting from a UCLA release: “In a report in the current online edition of JAMA Pediatrics, researchers from the UCLA Fielding School of Public Health show that taking acetaminophen during pregnancy is associated with a higher risk in children of attention-deficit/hyperactivity disorder and hyperkinetic disorder. The data raises the question of whether the drug should be considered safe for use by pregnant women.:

Read more at CBS News

And here at UCLA, whose researchers conducted the study.