Vitamin B6, a water-soluble vitamin, is found in three different natural forms: pyridoxine, pyridoxamine, and pyridoxal - all of which are normally found in foods. Humans depend on external sources to cover their vitamin B6 requirements and the pyridoxal 5`-phosphate (PLP) form is of major importance.
Excellent sources of vitamin B6 (pyridoxine) are chicken, beef liver, pork and veal. Good sources include fish (salmon, tuna, sardines, halibut, and herring), nuts (walnuts, peanuts), bread, corn and whole grain cereals. Generally, vegetables and fruits are rather poor sources of vitamin B6.