Beta Glucan is a product made from mushrooms that helps stimulate your immune system. It can help with diabetes, herpes simplex, HIV, Epstein-Barr virus, allergy, parasitic infection, emphysema, environmental Illness, trauma, common cold, chronic infection, AIDS, CMV virus, candidiasis, bronchitis, poor nutrition, periodontal disease, sleep deprivation, strenuous athletic training, chronic fatigue syndrome, old age, surgery, cancer, pneumonia, radiation exposure, high stressed lifestyles, chemotherapy, chronic allergies, toxic chemicals, pesticides, herbacides, fungal infections and viral infections