Colostrum
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Colostrum (also known as beestings or first milk or "immune milk") is a form of milk produced by the mammary glands of mammals in late pregnancy and the few days after giving birth.

Colostrum is high in carbohydrates, protein, and antibodies and low in fat (as human newborns may find fat difficult to digest). Newborns have very small digestive systems, and colostrum delivers its nutrients in a very concentrated low-volume form. It has a mild laxative effect, encouraging the passing of the baby's first stool, which is called meconium. This clears excess bilirubin, a waste product of dead red blood cells which is produced in large quantities at birth due to blood volume reduction, from the infant's body and helps prevent jaundice. Colostrum contains all five immunoglobulins found in all mammals, IgA, IgD, IgE, IgG and IgM. There are many beneficial proteins in the colostrum, including a variety of growth factors (IGfs).

There are a few scientific studies suggesting that human consumption of bovine colostrum is beneficial to general health. Proponents of the use of bovine colostrum by humans as a dietary supplement claim that bovine colostrum raises both general immunity and physical strength, and sometimes cite the few small-population studies of bovine colostrum in humans. However, the claims made for bovine colostrum in humans go far beyond the findings of any of these studies, and rely on anecdotal evidence (if any) to support the claims.

Some biotechnology companies have now taken further steps by injecting into cows proprietary vaccines protecting against human diseases, theorizing that such "hyper-immunized" primed colostrum might allow disease specific antibodies to be highlighted in the bovine colostrum, resulting in a dietary supplement with attributes for fighting specific pathogens. A few examples are IBD and IBS, Mucositis and Influenza. However, there are no recognized scientific studies of such "primed" bovine colostrum products, and any such studies in the United States would require a clinical trial and an investigational new drug application cleared by the Food and Drug Administration, since any product which is intended to treat or prevent disease is a "drug" as defined by Title 21, United States Code, Section 321(g).

Leipäjuusto (lit. 'bread cheese') or juustoleipä, which is also known in English as Finnish squeaky cheese, is a fresh cheese traditionally made from cow's beestings.