Teeth Whitening While Breastfeeding. However, they are not so effective and/or stable. While there is no solid evidence indicating that whitening your teeth during pregnancy or breastfeeding will cause harm to your baby, we recommend avoiding teeth whitening until your baby is born or until you are done breastfeeding.

While there is no solid evidence indicating that whitening your teeth during pregnancy or breastfeeding will cause harm to your baby, we recommend avoiding teeth whitening until your baby is born or until you are done breastfeeding. A guide to teeth whitening and breastfeeding when a woman announces she is pregnant, it is not uncommon for her to discover that almost every aspect of her life changes in one way or another. However, because of the way that hormones are while nursing, you may be more sensitive to any chemical.