Pantothenic acid is a vitamin, also known as vitamin B5. It is widely found in both plants and animals including meat, vegetables, cereal grains, legumes, eggs, and milk. Vitamin B5 is commercially available as D-pantothenic acid, as well as dexpanthenol and calcium pantothenate, which are chemicals made in the lab from D-pantothenic acid. Pantothenic acid is frequently used in combination with other B vitamins in vitamin B complex formulations.