Why Ester-C?The traditional form of Vitamin C is ascorbic acid which in some cases causes discomfort through indigestion. Ester-Cis an advanced, patented form of Vitamin C developed through many years of research. Ester-Ccombines ascorbic acid with a vital mineral in a unique process that yields a Vitamin C that is effectively absorbed and utilised. Ester-Cis therefore acid neutralised and gentle on the digestive system. Vitamin C contributes to maintain the normal function of the immune system,plays a role in normal collagen formation for the normal function of cartilage, supports normal function of the nervous system, normal psychological function, protection of the cells from oxidative stress, as well as contributing to a reduction in tiredness and fatigue.