Beta-1,3/1,6-glucan is a polysaccharide isolated from the cell wall of Saccharomyces cerevisiae. Stimulation of the immune system by Beta-1,3/1,6-glucan involves increasing the activity of macrophages, which devour foreign cells (germs). Beta-1,3/1,6-glucan is a substance that strengthens the immune system. ImmunoDol is used during convalescence, in stressful situations