What is vitamin b complex? Does it include B12?

B Complex has B12. Vitamin B Complex usually contains: B-1 (thiamine), B-2 (riboflavin), B-3 (niacin), B-5 (pantothenic acid), B-6 (pyridoxine), B-7 (biotin), B-9 (folic acid) & B-12 (cobalamin).
A supplement. Containing the group of b vitamins, so yes. However the problem with b 12 is usually with absorption so a pill may not be the answer for established deficiency.