Ig is a type of Immunoglobulin. IgY (Immunoglobulin-Y) is the most common type of immunoglobulin produced by the B cells in birds, reptiles and amphibians, and has a long history of being used as passive immunity therapeutic agents in humans and animals. Chicken (hen) IgY has been, and continues to be the most widely studied.
Similarly to human IgG, IgY is produced at high concentrations in serum, and accumulates in high concentrations in egg yolk to provide offspring with effective humoral immunity. High concentrations of antibodies making them ideal source for a variety of human and animal health applications. Clinical evidence demonstrates that when consumed, they are not rejected by the human immune system and the antibodies remain in the digestive tract.