Nutra-Life Ester C 500mg + Echinacea Chews provides 24 hour immune support in a chewable tablet. Made from a non-acidic, researched form of Vitamin C that supports natural immunity. May aid in decreasing the duration of illnesses when taken regularly. Ester-C® is a researched form of Vitamin C that supports natural immunity. Ester-C® may lead to a more sustained retention of Vitamin C in the white blood cells compared to standard Vitamin C*. It is a non-acidic form of Vitamin C and may be better tolerated than standard Vitamin C in people who are sensitive to acidic foods. Taken when required, Nutra-Life Ester-C® with Echinacea Chewables: Provides 24 hour immune support May aid in decreasing the duration of winter ills when taken regularly Provides a potent antioxidant. *in non-smokers.