One liquid dose has 400 IU of vitamin D-the daily amount recommended by the American Academy of Pediatrics.Liquid vitamin D supplement with easy-to-use dropper for breastfed & partially breastfed infants In one convenient liquid dose, Enfamil D-Vi-Sol provides 400 IU of vitamin D-an essential vitamin that helps your baby absorb calcium for strong bones and teeth. Enfamil D Vi Sol helps breastfed babies get the daily amount of vitamin D recommended by the American Academy of Pediatrics.