A 2-month-old girl is brought to the office by her mother for an initial well-child evaluation. This is the mother’s first child. The pregnancy and vaginal birth were normal, with a birth weight of 3640 g. The mother is exclusively breastfeeding her daughter and plans to start other foods at 4 to 6 months of age. The family lives in an apartment with a fluoride-treated water supply.

The mother asks if she should give the child any nutritional supplements during the first 12 months of life.