Hi mama! Centrum is generally considered safe while breastfeeding since most of its vitamins and minerals pass through in small amounts that won't harm baby, pero since you're asking specifically, mas safe talaga to check with your OB or pedia just to be sure, they can review the exact formula and your situation. Most moms I know take multivitamins during breastfeeding din, pero better peace of mind if your doctor gives the go-ahead, diba?