We consulted an integrative gastroenterologist, as well as doctors in obstetrics and gynecology to help answer that question. In short, taking probiotics while pregnant is generally safe2. As with any medication or supplement, you should always consult your personal health care provider before starting a new regimen, though. Based on those studies (like this one on gastrointestinal issues during pregnancy3 or this one on the safety of probiotics with pregnancy and lactation4), there is no evidence of harm from taking probiotics while pregnant. In fact, Gilberg-Lenz says some studies even show potential benefits. For women with skin conditions, like eczema and allergies, taking probiotics during pregnancy may help manage or reduce those symptoms in the child5,* according to a study published by the World Health Organization. Though, “to date, there have been mixed results from the pregnancy studies,” clinical professor at Yale University and board-certified OB/GYN Mary Jane Minkin, M.D., says. Some show effective prevention of allergic issues for the babies, while some have no effect, meaning there needs to be more research to draw definitive conclusions. Also, Gilberg-Lenz says women should not rely on probiotics to prevent complications with birth or fetal development.