MacroGard is a source of highly purified, exposed and preserved beta 1,3/1,6 glucans produced from a specially selected strain of Saccharomyces cerevisae yeast . The inclusion of beta 1.3/1.6 glucans in the diets of companion animals, farm animals and aquatic organisms has the potential to balance their natural defenses, contributing to a more efficient protection against the challenges these animals are submitted to.