Ester-C® is an ingredient that contains natural vitamin C metabolites and is rapidly absorbed, although in a less acidic form. Ester-C® dietary supplement is a formula consisting of vitamin C, which is intended for normal function of the immune system, protection of cells from oxidative stress, normal function of the immune system during and after intense exercise, for normal collagen formation for normal blood vessel function , bones, cartilage, gums, skin, teeth; normal energy metabolism, to reduce tiredness and fatigue and increased iron absorption. Ester-C® is suitable for winter, protection against oxidative stress, smokers, filling nutritional gaps, women.