Baby Ddrops 400 IU is a purified vitamin D3 supplement, specifically designed for breastfed babies. Simply apply just one drop where baby feeds, or onto a clean surface such as a washed fingertip. There’s no taste, so it doesn’t interfere with feeding.Health Canada recommends that all breastfed, healthy term babies receive a daily vitamin D supplement of 400 IU a day. This dose of the vitamin should begin at birth and continue until one year of age. Infants who are partially breastfed should also receive a vitamin D supplement of 400 IU. They should get this amount regardless of their average formula intake. Their total intake from supplement and formula is not likely to exceed the upper level of 1000 IU per day. If your baby is formula fed, The American Academy of Pediatrics recommends a supplement for infants consuming less than 1000 ml of formula daily.