Colostrum is the first form of milk produced by the mammary glands of mammals immediately following delivery of the newborn. Most species will begin to generate colostrum just prior to giving birth. Colostrum has especially high amounts of bioactive compounds compared to mature milk to give the newborn the best possible start to life. Specifically, colostrum contains antibodies to protect the newborn against disease and infection, and immune and growth factors and other bioactive that help to activate a newborn’s immune system, jumpstart gut function, and seed a healthy gut microbiome in the first few days of life. The bioactive found in colostrum is essential for a newborn’s health, growth, and vitality.