Vitamin B6, also known as pyridoxine, is a water-soluble nutrient (like all B vitamins). Three related nutrient compounds — pyridoxine, pyridoxal, and pyridoxamine — are all part of the B6 group. Pyridoxal phosphate (PLP) is the active form of pyridoxine in the human body.

People who eat a balanced diet containing good sources of Vitamin B6 should be able to meet the daily requirement without taking a supplement. Deficiency of Vitamin B6 is rare but can occur among the elderly and among alcoholics.

In this model, carbon atoms are dark gray, hydrogen atoms are white, nitrogen atoms are blue, and oxygen atoms are red.

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