Jo Cheah talks to Debra Kennedy, director of MotherSafe, about her paper on drug safety in pregnancy. Debra discusses the key considerations when stopping or starting a medicine during pregnancy, and the ways in which medicines can affect developing fetuses. Debra also explains the Australian categorisation system for prescribing medicines in pregnancy. Read the full article by Debra and her co-author, Ronald Batagol, in Australian Prescriber.