Vitamin D is an essential nutrient that helps body absorb calcium for strong, healthy bones and teeth � particularly important in growing children.Vitamin D is produced by the body when the skin is exposed to sunlight. Unfortunately, for much of the year, it is difficult to get adequate amounts of vitamin D from sunlight. As a result, the UK Department of Health recommends that all infants and children should take a vitamin D supplement. Natures Aid Vitamin D3 Mini Drops is an award-winning supplement for breastfed babies, infants & children from new-born to 5 years. Drops provide 400iu Vitamin D3 per dose � the daily recommended amount.