Ester-C® Calcium Ascorbate-Threonate is a patented, EU-approved, form of Vitamin C created through a unique water based production process, which neutralizes ascorbic acid to create calcium ascorbate and the metabolites of vitamin C. This advanced formulation, is gentle on the stomach and better retained than normal vitamin C.


Ester-C Calcium Ascorbate-Threonate is the only form of vitamin C, with research validating retention in white blood cells. The presence of key metabolites such as threonate has been shown to be responsible for this increased level and retention of Vitamin C by the cells. This, as well as delayed renal excretion, is conducive to providing optimum cellular concentration of vitamin C for optimum biochemical activity.


Ester-C® is listed on the Annex 2 list of 1924/2006 Food Supplements Directive (EFSA Journal 2009; 7 (9): 1226). All the EFSA Claims on Vitamin C can be used for Ester-C®, alongside the other benefits and advantages of this patented product.


Download the Ester-C® White Paper on this page (please remember to login) to learn more about all the research conducted, as well as the product advantages. Contact us for further information.