The dietary supplement Ester-C with Echinacea & Sambucus nigra is a dietary supplement that combines the advanced form of Vitamin C, Ester C, with Echinacea and elderberry. The ester form of vitamin C (ascorbate Ester C) a natural metabolite of vitamin C (threonate), thanks to a patented production process, has the property of penetrating into the bloodstream more rapidly than other forms of vitamin C, giving better absorption. Moreover, studies remains in the body for a period of 24 hours, providing continuous coverage. Similarly, the non-acidic form of Ester C makes friendly stomach. Vitamin C contributes to normal immune function by enhancing the body's defenses while an important role in normal functioning of the metabolism to produce energy, thus reducing fatigue and tiredness. At the same time contributes to the formation of collagen for normal function of blood vessels, bone, cartilage, teeth, gums and skin and in the functioning of the nervous system. In addition to helping in the assimilation of iron, while due to its antioxidant capacity protects cells against oxidative stress.