(Arabinogalactan derived from the Western Larch Tree). This is an excellent product for chronic immune dysfunction, virus, inner ear infections (children), free radical pathologies, allergy, some cases of fibromyalgia, decreased secretory IgA, chronic fatigue syndrome, etc. Studies have shown Arabinogalactan in being supportive for eye health (dry eye and corneal lesions), gastrointestinal function and more.