This product provides Vitamin C in the form of calcium ascorbate, a non acidic compound which is believed to be gentler on the stomach than ascorbic acid. Anyone who is taking large amounts of vitamin C may experience digestive disturbance, in which case Gentle C would be an ideal option. Up to 3g of Vitamin C can be taken using Lamberts Gentle vitamin C (6 tablets) and if this amount is being consumed it would be best that the tablets are taken spread out through the day. Each tablet also brovides over 100mg of calcium, which can make a valuable contribution to a persons calcium intake.