Pyridoxine, also known as vitamin B6, is a water-soluble vitamin that plays a critical role in the functioning of enzymes involved in protein metabolism. It's also important for the production of neurotransmitters, substances that transmit nerve signals.
It can be found in foods like fortified cereals, beans, poultry, fish, and some vegetables and fruits, especially dark leafy greens, papayas, oranges, and cantaloupe. Adults generally need about 1.3-1.7 milligrams of vitamin B6 per day. A lack of this vitamin can lead to a form of anemia similar to iron deficiency anemia.