Vitamin B6 (Vitamin B6), also known as pyridoxine, is a water-soluble vitamin found in the body in the form of a phosphate ester. It is easily damaged by light or alkali and does not tolerate high temperatures. In 1936, it was named vitamin B6. Vitamin B6 is colorless crystal, soluble in water and ethanol, stable in acid, easy to destroy in lye. Vitamin B6 is found in yeast, liver, grains, meat, fish, eggs, beans and peanuts. Vitamin B6 is a component of some coenzymes in human body, involved in a variety of metabolic reactions, especially the amino acid metabolism is closely related.