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Vitamins B6 and B12

Vitamin B6 (pyridoxine) in coenzyme forms performs a whole host of functions in the body and is extremely versatile, and is in fact involved in more than 100 enzyme reactions. It is involved in the metabolism of protein, carbohydrate and fats.  Vitamin B6 is important for brain health via  the biosynthesis of neurotransmitters and in needed to maintain normal levels of homocysteine, an amino acid in the blood . It is also critical for immune support. Vitamin B12 (cobalamin) is a nutrient that helps keep the body's nerve and blood cells healthy and is involved in making DNA, the genetic material in all cells. 

Sources: and  .