Though it is a Safety Class 1B adaptogen, no studies are available on the safety of using astragalus during pregnancy and breastfeeding. It is generally considered safe and appropriate for "young, old, weak, strong, and even small children and infants (dosage would need to be adjusted accordingly)." (3) Though renowned herbalist Susun Weed does not mention breastfeeding specifically, she does recommend it to postpartum mothers whose children were born by cesarean. (9)