Colostrum Powder (Bovine Colostrum) 4 oz from Source NaturalsColostrum Powder, Bovine Colostrum Powder Colostrum is the nourishing and life giving fluid produced by mammals as food for the newborn in the few days after birth, before milk production begins. This unique, bovine derived food supplement is rich in a variety of biologically active proteins, including immunoglobulins. Supplement Facts for powder Serving Size: 1 teaspoon Amount %DV Colostrum (from dried bovine colostrum) 2 g Yielding 600 mg of