Vitamin C (ascorbic acid) is a water-soluble vitamin essential in the human diet because the body is unable to synthesise it. It is found in a wide variety of fruit (especially grapefruit, lemons, limes, blackcurrants, oranges and kiwi fruit) and vegetables (eg, broccoli, green and red peppers, tomatoes, cabbage, sprouts and sweet potatoes). It is also found in fresh milk, fish and offal such as liver and kidney.
This is a companion discussion topic for the original article at https://patient.info/doctor/nutrition/vitamin-c-deficiency-pro