Canadian Brand. Turkey tail has been used in ancient eastern medicine for millennia, for both human and animals, livestock and domestic. They are rich in beta-glucan which is known to help activate immune cells and increase antibody production (to better help fight off infections). It is loaded with antioxidants, helps aid digestion, supports the colon, and is rich in polysaccharides (dietary fiber) which supports and fortifies immune function. Available in an easy to use powder extract.