Colostrum is special precisely because it naturally contains many times more immunoglobulins than human breast milk, for example. High-quality products made from colostrum are processed gently and contain at least 50 % immunoglobulins as dry powder and at least 45 g immunoglobulins per litre as liquid extract. This applies to products where the raw material was obtained from the first two milkings after calving. Colostrum products with lower immunoglobulin levels, on the other hand, are obtained from later milkings. The subsequent addition of immunoglobulins from other sources is not advised for the reasons mentioned.