Vitamin B5 (pantothenic acid) is found in both plants and animals. To be specific, Vitamin B5 is in vegetables, legumes, meat, milk, and eggs. In general, Vitamin B5 helps the body use proteins, lipids, and carbohydrates. In most cases, people use Vitamin B5 to treat pantothenic acid deficiency. In addition, similar chemical dexpanthenol is used for nasal swelling, skin irritation, wound healing, etc. However, there is not enough evidence to prove it helps with other conditions.