Colostrum is the pre-milk fluid produced by all mammals during the first 24-48 hours after giving birth. In order to maintain a healthy immune system, your body needs immune-building antibodies, known as Immunoglobulins (IgG). Bovine colostrum is produced by a female cow, and is the best known source of IgG. Colostrum is high in protein and antibodies, and has no known side effects.Provides Powerful Immune Factors, Stimulates Immune Activity. Helps Maintain an Un-inflammed GI Tract. Amorearth Colostrum provides extra support when your body is under environmental or physical stress. Amorearth Colostrum is made from Gir cow (A2) Colostrum one of the very few producers of this in India.