Whether weeknight dinners have started to feel more like a stand-off at high noon (will your 5-year-old finally eat his broccoli?) or your child recently recovered from the tummy flu and a bout of antibiotics, you’re concerned about his gut health. Are probiotics for kids the answer? Are they safe? We asked pediatrician and surgeon Jacqueline Jones, M.D. and author of Medical Parenting: How to Navigate the Health, Wellness & Medical System with Your Child, for her opinion. Here’s what she told us.