The patented immune health formula that stays in your system for 24 hours.*^ This supplement is carefully formulated to contain naturally occurring metabolites. Metabolites are substances derived from other compounds (such as nutrients) during the process of metabolism. The metabolites in this supplement help enhance the retention of vitamin C by your white blood cells, which are a vital component of your immune system.* So once you take your daily dose of this supplement, it gets into your white blood cells and stays there - for up to 24 hours, which is longer than regular vitamin C.^ Plus, this supplement is manufacturer without chemicals to neutralize pH, which means it's non-acidic and gentle on your stomach. 2 per day. Non-GMO. No gluten, wheat, milk, lactose, artificial color, flavor or sweetener, preservatives, sugar, starch, soy, yeast, fish. Sodium free. Suitable for vegetarians. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. ^Ester-C stays in the white blood cells for up to 24 hours, which is longer than regular vitamin C. White blood cells are an important component of the immune system.