When Julie Anderson*, 35 years old, learned that she was 10 weeks pregnant, she found herself grappling with a conundrum. She had taken medication to control her attention deficit hyperactivity disorder (ADHD) for years, but now that she knew she was pregnant, should she stay on the drugs, or go off them for the duration of her pregnancy? And beyond that question loomed an even bigger one: can you take ADHD medicine during pregnancy at all, in any instance? Is it even safe?