Answer:
First of all, we must understand that there are several forms of Vitamin B. The primary group of the B vitamins include B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folic acid), and B12 (cyanocobalamin). In addition, there are numerous sub-groups of the Vitamin B family which are considered less pertinent to human needs, but important to other organisms and some animals. These include B4 (adenine), B8 (inositol), B13, (orotic acid), B17 (amygdalin), B20 (carnitine), and more.