Ascorbic Acid : Vitamin C...

Vitamin C or ascorbic acid, is an essential nutrient for humans, and a small number of other species. The presence of vitamin C is required for a range of essential metabolic reactions in all animals and in plants and is made internally by almost all organisms, humans being one notable exception.

It is widely known as the vitamin whose deficiency causes scurvy in humans. It is also widely used as a food additive.

The uses and the daily requirement of vitamin C are matters of on-going debate.