For some people, vitamin C in certain forms may cause gastric upset due to its acidic nature. These Gentle C tablets are particularly gentle on the stomach and therefore ideal for those with delicate digestions. this vitamin C combination is neutralised with calcium to provide a soothing, non-acidic form. The calcium contribution at 77mg is a useful source of this bone-making mineral. Great for those people who require large amounts of vitamin C, but who wish to take it in divided doses.