Very few drugs have been studied in pregnancy, so it is always best to check with a doctor or pharmacist. This website, MotherToBaby, from The United States, has factsheets for parents that answer frequently asked questions about exposures during pregnancy and breastfeeding.
Generally, it is okay to take the occasional Tylenol (acetaminophen), but use Advil (ibuprofen) with caution and not after 30 weeks.
