If u are getting a b-complex, it should have both + more like thiamine, riboflavin or b2, niacin, folate or folic acid, and pantothenic acid.
b6 or pyridoxine is required as an enzymatic cofactor for carbohydrate and amino acid metabolism. assists in synthesis of blood cells.
b12 or cobalamin assists with formation of blood and is required for a healthy nervous system. It is an enzymatic cofactor of homocysteine.