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40% IgGHighly Concentrated Immune SupportNon-GMODietary SupplementCertified Gluten-Free by the Gluten-Free Certification OrganizationColostrum is a highly concentrated source of immune and growth factors from mammary glands shortly after birth. Our Colostrum is derived from BSE- hormone- pesticide- and antibiotic-free USDA certified dairy farms in the U.S. It is collected after the first 24 hours defatted and standardized to contain 40% IgG. This supplement helps activate and balance immune response and is a highly concentrated immune support product.Colostrum contains immunoglobulins that play a specific role in immune health. IgG is naturally the highest concentration in colostrum.