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Vitamin B6 (Pyridoxine) Deficiency

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Lots of Pyridoxine In This Pie...Chicken, Cheese,Spinach, Tomato

Lots of Pyridoxine In This Pie…Chicken, Cheese,Spinach, Tomato

What Is Vitamin B6 (Pyridoxine)?

Pyridoxine is an essential vitamin that is required for the health of nerves, bones, blood, arteries, blood sugar, the immune system and metabolism of proteins.

Two important functions of pyridoxine involve coenzymes that are involved in regulating the metabolism of proteins like methionine and tryptophan and their intermediate amino acid building blocks.

In total, the coenzymic form of vitamin B-6, pyridoxal phosphate (PLP), serves as a coenzyme for over 140 enzymes in human metabolism.1  Functions are more fully described below.

Magnesium is required for pyridoxine to actually attach to enzymes dependent on it.

Because pyridoxine is excreted from the body by the kidneys, urinary excretion of it cannot be detected when vitamin intake is below the required levels. On the other hand, when intake exceeds saturation in the body, the vitamin and/or its metabolites are actively excreted into urine to prevent excessive toxicity of the vitamins.2

Smoking blocks use of pyridoxine.

What Is Pyridoxine Deficiency In Celiac Disease and/or Gluten Sensitivity?


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  1. Gregory JF 3rd1, Park Y, Lamers Y, Bandyopadhyay N, Chi YY, Lee K, Kim S, da Silva V, Hove N, Ranka S, Kahveci T, Muller KE, Stevens RD, Newgard CB, Stacpoole PW, Jones DP. Metabolomic analysis reveals extended metabolic consequences of marginal vitamin B-6 deficiency in healthy human subjects. PLoS One. 2013 Jun 11;8(6):e63544. doi: 10.1371/journal.pone.0063544. []
  2. Shibata K, Hirose J, Fukuwatari T. Relationship Between Urinary Concentrations of Nine Water-soluble Vitamins and their Vitamin Intakes in Japanese Adult Males. Nutr Metab Insights. 2014 Aug 5;7:61-75. doi: 10.4137/NMI.S17245. []