Performs a wide variety of functions in the body and is extremely versatile with more than 100 enzymatic reactions, mostly concerned with protein metabolism. Hypoallergenic. Gluten and casein free. Capsules are plant based. Ultra Tested®. A primary function of vitamin B6 is supporting protein metabolism. This nutrient also plays a role in cognitive development through the biosynthesis of neurotransmitters and in maintaining normal levels of homocysteine, an amino acid, in the blood. In addition, vitamin B6 is involved in gluconeogenesis and glycogenolysis, immune function (for example, it promotes lymphocyte and interleukin-2 production) and hemoglobin formation. The vitamin B6 source in this formulation is pyridoxine hydrochloride. Many individuals do not get adequate vitamin B6 in their preferred daily multivitamin. This product offers the option of additional vitamin B6 supplementation.