DefinitionPantothenic acid and biotin are types of B vitamins. They are water-soluble, which means that the body can't store them. If the body can't use all of the vitamin, the extra leaves the body through the urine. Therefore, these vitamins must be replaced every day.Alternative NamesBiotin; Vitamin B5; B5 vitaminFunctionPantothenic acid and biotin are essential to growth. They help the body break down and use food. This is called metabolism.Pathothenic acid is also called vitamin B5. It helps break down carbohydrates, proteins, and fats. Biotin also helps break down proteins and carbohydrates.Food SourcesPantothenic acid and biotin are found in foods that are good sources of B vitamins, including the following:EggsFishMilk and milk productsWhole-grain cerealsLegumesYeastBroccoli and ot