What is colostrum?

First milk: It is the first milk made in the breast. It is high in antibodies and protein and low in fat. It is very concentrated. Your baby does not need to ingest a large amount to get all the nourishment and immunity from this fluid. Colostrum also helps empty the GI tract of meconium and excess mucus.

Baby's first milk: Colostrum is essentially baby's first "milk", however, it is thick and yellow and looks nothing like milk. This important first meal is loaded with antibodies and protein, and your newborn will receive this as soon as she latches onto your breast to nurse. For the first 3 to 5 days of life, this is all your newborn will need, then you'll notice the colostrum giving way to creamy white breastmilk.