Colostrum is the nourishing fluid produced by mammals as food for the newborn in the few days after birth before milk production begins. This bovine-derived food supplement offers a variety of biologically active proteins including immunoglobulins lactoferrin and other factors that support the maintenance of lean muscle tissue as well as a healthy immune system. Scientific studies have shown that colostrum may help to enhance bioavailability and absorption of nutrients into the body while promoting healthy gastrointestinal function.