Patented Immune Health Formula 24 Hour Immune Support Maximum Strength Lasts Longer Than Regular Vitamin C† Stomach Friendly! 1 Per Day Non-GMO Dietary Supplement Suitable for Vegetarians Ester-C lasts longer than regular Vitamin C and supports your immune system for 24 hours!† Enjoy the benefits of Ester-C every day! Patented 24 Hour Immune Support Stays in the immune system longer than regular Vitamin C Non-acidic and gentler on your stomach than regular Vitamin C Not all Vitamin C is created equal...There is only One Patented Ester-C formula Ester-C is the patented immune health formula that stays in your system for 24 hours† Ester-C is the support you can count on all day, every day. Ester-C is carefully formulated to contain naturally occurring metabolites. Metabolites are substance derived from other compounds (such as nutrients) during the process of metabolism. The metabolites in Ester-C 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 Ester-C, it gets into your white blood cells, and stays there - for up to 24 hours, which is longer than regular Vitamin C.† Plus, Ester-C is manufactured without chemicals to neutralize pH, which means it's non-acidic and gentle on your stomach. Patented Ester-C delivers 24-hour immune and antioxidant support you can trust. †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.