Pyridoxine

The two major forms of vitamin B₆ are pyridoxine and pyridoxamine. In the liver they are converted to pyridoxal 5'-phosphate (PLP) which is a cofactor in many reactions of amino acid metabolism. PLP also is necessary for the enzymatic reaction governing the release of glucose from glycogen.

External link: http://www.cc.nih.gov/ccc/supplements/vitb6.html