Immupure Colostrum is cold sterilized with our special proprietary process that preserves the potency of the nutrient's natural ingredients: a balance of vitamins, minerals, immunoglobulins (IgG, IgA and IgM - the body's first line of defense), Lactoferrin (an antimicrobial/antibacterial providing the innate defenses of human infants), MSM (an infection fighting sulfur compound), proteins, amino acids, growth factors, hormones, enzymes, peptides and nucleotides. The formula is pure and natural: no Parabens, oils and fragrances. Though it comes from pre-milk, immupure is lactose-free, and safe for pregnant women. No animal testing.