My daughter is breastfed exclusively. I have read several times that babies that are breastfed often do not get enough vitamin D. I did see Vitamin D drops at the store but I wanted to ask the pediatrician before I just started giving her something she may not need. I asked the pediatrician about the drops. She said it is a good idea to give her Vitamin D drops since there is no Vitamin D in breast milk. I picked these drops up immediately. They are made by Enfamil which I find annoying. A formula company is still getting some of my money even though my baby is breastfed which is just annoying to me. But I can't seem to find them in any other brand at all so I have had to buy them. They are sort of pricey for drops. She gets 1.0 mL which is a whole tube full of it. It's a gross light brown color, but they smell really good they smell sweet. She really likes them and she sucks them down. I guess giving this to her I know she is at least getting her Vitamin D.