Yes, it is safe during breastfeeding and it does not affect the baby or mother in a negative way. Since the dose is low and most of the ingredients are digestible, the chances of passing into the baby during breastfeeding are limited. Even, if passed it should not affect the baby as the ingredients are natural and short living. Still, you can contact Himalaya customer care for it. Further, it helps relieve symptoms in the mother fast and ensures health for both.