IgGI Shield combines ImmunoLin with N-acetyl-D-glucosamine to support the structure of the cells of the intestinal lining and promote a healthy inflammatory response in the gastrointestinal tract. ImmunoLin is a serum-derived bovine immunoglobulin concentrate (SBI), the only purified, dairy-free source of immunoglobulin G (IgG) available as a dietary supplement. Immunoglobulins play an integral role in supporting healthy immune function at both the gut and systemic levels. N-acetyl-D-glucosamine promotes healthy immune function by supporting a balanced immune response. Ideal for those seeking comprehensive gut barrier and immune support.