Calcium pyruvate is the calcium salt of pyruvic acid. It is very stable, white crystalline powder, tasteless, nearly neutral, and slightly soluble in water. However, pyruvic acid is extremely unstable and easily oxidized. Pyruvic acid is a component of the human body. It is mainly involved in the metabolism of sugars, fats, etc. in the human body, and is also one of the intermediate products of carbohydrate metabolism.