V i t a m i n B 5
Vitamin B5 (Pantothenic Acid) is needed for energy metabolism. In addition to playing a role in the breakdown of fats and carbohydrates for energy, vitamin B5 is critical to the manufacture of red blood cells, as well as sex and stress-related hormones produced in the adrenal glands.
In its metabolically active form, vitamin B5 gets combined with another small, sulfur-containing molecule to form coenzyme A (or simply, CoA). This conversion allows it to participate in a wide variety of chemical reactions.
One of the most unique is the way the body uses Vitamin B5 to store fat and to convert fat into energy. When found in its CoA form, vitamin B5 plays a pivotal role in helping release energy from sugars, starches and fats. Most of this energy release occurs in the energy production factories found in every cell called the mitochondria.
Vitamin B5 supports the adrenal glands to increase production of cortisone and other adrenal hormones to help counteract stress and enhance metabolism. Interestingly, increased levels of vitamin B5 were found in the blood of marathon runners.
Vitamin B5 is also important in maintaining a healthy digestive tract, and it helps to use other vitamins, particularly B2. Your body needs pantothenic acid to synthesize cholesterol as well. And it can also be made by the bacterial flora in the human intestines.
Test suggest that vitamin B5 supplements may speed wound healing, especially following surgery. This may be particularly true if vitamin B5 is combined with vitamin C.
Whole grains are a good dietary source for Vitamin B5. The Vitamin is mostly removed in refined grains, as panthotenic acid is especially found in the outer layers of the grain.
5 mg RDA - 500 mg UL
RDA (recommanded dietary allowances) per day 
UL (upper intake level) per day 
 Dietary Reference Intakes: Vitamins.
The National Academies, 2001
 Risk Factor: Vitamin Deficiency
Andreas Jopp, 2010