NK Everyday is an immune support supplement containing ingredients that have been shown to increase NK cell activity which is important to immune system health.* Your NK cells are one of your strongest defenses against infections and cancer. The health of your NK cells is critically important to ensure a strong immunity. NK (NATURAL KILLER)cells function can decline with age, poor diet, lack of sleep, smoking and other stresses on the body. Unfortunately, a decline in NK cell function can leave you vulnerable to viruses, bacterial infections, and tumor formation.NK Everyday immune support can help keep your body in fighting condition and ready to fend off foreign invaders.NK Everyday is a proprietary blend of vitamins, minerals, and Agaricus mushroom extract which are essential for a healthy immune system