Vitamin and mineral supplements are not required for an average healthy, full-term breastfed baby during the first year. Breast milk is all that your baby needs for at least the first six months of life. Research has shown that vitamins, fluoride, iron, water, juice, formula and solid foods are rarely beneficial to healthy breastfed babies during the first six months, and some may even be harmful. There are certain cases where a vitamin supplement may be needed for a breastfed baby during the first year, but these cases are the exception and are prescribed by a physician.