Non-Acidic Controlled Delivery Formula Immune Support 1000 mg Non-Acidic Ester-C^ 6 Billion Multi-Strain Probiotics^♦ Patented Ester-C Unique Gentle For of Vitamin C Once Daily 100% Vegetarian Dietary Supplement BIO-tract Delivery System Your body's first line of defense is its immune system, where it fights the damaging effects of free radicals and premature cell aging. Essential immune system mechanisms are found in both white blood cells and in your digestive system. Since approximately 70% of immune cells are located in our digestive tract, good intestinal microflora balance is not only important for digestion but plays a vital role in reinforcing immune health. With the combination of Ester-C's active immune system support and 6 billion bio-active probiotics^♦, you can now experience the advanced level of both immune and digestive support in a once daily complex. Ester-C with Probiotics combines patented, non-acidic Ester-C with a multi-strain vegetarian complex of 6 billion bio-active probiotic microorganisms^♦. This breakthrough formula is enhanced with Bio-Tract a controlled delivery technology that protects probiotics from harsh stomach acid, releasing both probiotics and Ester-C throughout the intestinal tract, hour after hour...for the "feel good" difference you can count on. ^Per 2 vegetarian tablet serving ♦At time of manufacture Bio-tract Technology With Bio-tract, probiotics get past stomach acid without breaking down. Moistened by fluids in the stomach, a gel-like enteric coated shield develops around the tablet, protecting it from gastric acid and a harsh stomach environment. Once the tablet reaches the intestinal tract, bio-active organisms are released through the protective layer and into the digestive system, where they are most needed. This allows good probiotics to populate throughout the intestinal tract. Ester-C The Better Vitamin C Patented Ester-C increases levels of vitamin C in the body, getting into white blood cells, an important part of your body's immune system. In addition, Ester-C is buffered and non-acidic, so it stays gentle on the digestive system. Once daily Ester-C has your immune health covered. It supports circulation, is beneficial to joints and connective tissues, helps reduce the premature aging of metabolic cells, and forms the basis of healthy hair, skin and nails. Helping to neutralize free radicals, Ester-C also aids in antioxidant health.