Do breastfed infants need supplemental vitamins?

Supplements of any kind are always controversial in exclusively breastfed i nfants. Of the fat- and water-soluble vitamins, deficiencies of vitamins D and K have been well described in this population. These are the only two v itamins commonly given to breastfed infants. Vitamin K is given at the time of birth, and vitamin D is generally recommended for all dark-skinned infa nts or those not receiving regular sunshine exposure.