Provides vitamins and minerals essential for immune functions, including white blood cell functions and thymus gland activity. These nutrients are combined with a base of thymus fractions, lysine, and extracts of echinacea, blue flag, and goldenseal.The special bovine thymus fraction is made up of 750mg of predigested polypeptide (long-chain amino acid) fractions. Predigestion means the material is broken down into peptides and polypeptides-smaller chains of amino acids. The low molecular weight of the peptides ensures a phenomenally high absorption rate- between 95-98 percent. Enzymatic Therapy has exclusive rights to this unique production method.