Colostrum is a mother's pre-milk concentrate produced only within the first 48 hours after giving birth. It has a perfect combination of immunoglobulins (anti-bodies), acidophilus and lactoferrin ( a powerful anti-micobial). Colostrum IgG30 is gathered from organically pasture-fed, co-op dairy cattle at its highest potency within the first 6-12 hours after birthing.