It may also be advisable to supplement a very small amount of the active form of Vitamin B6, since vegetarian sources of Vit B6 only supply the inactive form, which will have to be converted to the active form by the liver, however the efficiency of the liver to do so may be compromised with certain types of liver diseases. Ideally, when supplementing Vitamin B6 as pyridoxine, a brand should be purchased that supplies a small percentage of Vitamin B6 as pyridoxal-5-phosphate as well... Full Text