Vitamin B6 is a micronutrient involved in the metabolic process of many enzymes in about ten different metabolic processes, mostly involving amino acids. It is an overall term for a group of related chemical compounds that are interchangeable in these processes. The most common form in the diet is pyridoxal 5'-phosphate. However, most vitamin supplements use the easier to produce pyridoxine. Cooking, other processing and storage can break down B6 compounds, although the compounds found in plants tend to be more stable.