
Pantothenic acid, also called vitamin B5 (a B vitamin), is a water-soluble vitamin required to sustain life (essential nutrient). It is a component of coenzyme A (CoA), a molecule that is necessary for numerous vital chemical reactions to occur in cells. Pantothenic acid is essential to the metabolism of carbohydrates, proteins, and fats, as well as for the synthesis of hormones and cholesterol.
The name pantothenic acid comes from the Greek word pantos, meaning "everywhere," referring to its wide distribution in most plants and animals. Rich food sources include meats, liver, kidney, fish/shellfish, chicken, vegetables, legumes, yeast, eggs, and milk. However, freezing and canning may lead to a loss of much of the pantothenic acid content. Whole grains are another good source of the vitamin, but milling often removes much of the pantothenic acid, as it is found in the outer layers of whole grains.
Pantothenic acid deficiency is exceedingly rare and likely only occurs only in cases of the most severe life-threatening malnutrition. Most individuals likely obtain sufficient amounts from dietary sources.