Vitamin B6 and Histamine

Vitamin B6 is a collective term for all 3-hydroxy-2-methylpyridines which act as vitamins. Vitamin B6 substances like pyridoxine, pyridoxal, pyridoxamine, and their phosphorylated metabolites are all equally effective. Pyridoxal-5-phosphate and pyridoxamine-5-phosphate fulfill the functions of a coenzyme in the organism.