Polysaccharopeptides are protein-bound polysaccharides (carbohydrates) that are found in the turkey tail mushroom. Two types of polysaccharopeptides found in turkey tails are Krestin (PSK) and Polysaccharide Peptide (PSP). Both PSK and PSP possess powerful immune-boosting properties. They promote immune response by both activating and inhibiting specific types of immune cells and by suppressing inflammation.
Turkey tail contains an array of antioxidants, including phenols and flavonoids. Phenol and flavonoid antioxidants promote immune system health by reducing inflammation and stimulating the release of protective compounds.