This column, Drugs, Pregnancy, and Lactation, appears regularly in Ob.Gyn. News, a publication of Elsevier. Dr. Cohen directs the perinatal psychiatry program at Massachusetts General Hospital, Boston, which provides information about pregnancy and mental health at www.womensmentalhealth.org. He has been a consultant to manufacturers of SSRIs. To comment, e-mail him at obnews@elsevier.com.