Too much Tylenol in pregnancy could affect child's development, study finds - NBC News.com

Too much Tylenol in pregnancy could affect child's development, study finds - NBC News.com: Expectant mothers often take Tylenol, with the active ingredient acetaminophen, to deal with back pain, headaches or mild fevers during pregnancy. But frequent use may be linked to poorer language skills and behavior problems among their children, according to a new study.