Vitamin B6 is found in three forms – pyridoxine hydrochloride, pyridoxal, and pyridoxamine – all of which must be converted into activated pyridoxal-5phosphate (P-5-P) by the liver. P-5-P is the form of vitamin B6 the body ultimately uses and is necessary for a wide range of actions, including the production of GABA, the conversion of 5-HTP to serotonin, and also in the decarboxylation of L-Dopa to dopamine. It is also needed for glucose production as well as amino acid and lipid metabolism.