IS-3 referred to as Immune Support 3: This is one of our most popular supplements for those wishing to support and improve their immune health. IS-3 is especially popular for those who have chronic sinus issues, allergies and seem to fight colds and flu. It is also one of the first choices for those with a family history of cancer because the ingredients have proven to help the body fight cell mutations. The ingredients such as IP-6 and Beta 1-3, 1-6 D Glucans have proven to improve killer T cell activity while increasing the number of white blood cells, which help fight infection from bacteria, germs, virus and toxins. It also helps reduce inflammatory response and stops free radical damage caused by infection. IS-3 is also a wonderful antiaging supplement that may reduce triglyceride levels.