This document discusses vitamin C, also known as ascorbic acid. It provides information on the chemical and physical properties of vitamin C, its structure, production sources, functions in the body, recommended dietary intake, deficiency, excess intake, and references. Key functions of vitamin C include its role in collagen synthesis, carnitine synthesis, neurotransmitter synthesis, acting as an antioxidant, and aiding iron absorption. Vitamin C helps support tissue growth and repair, immune function and cardiovascular health. Deficiency can result in scurvy while excess intake in the long term can potentially lead to oxalate or urate kidney stones.